Sudden huge increase in internet data usage

As of last month my data usage was 294 gb we just came back to xfinity after dropping them for a year because I couldn't deal with the speed delays in the fiberopti. I left xfinity because their customer service is terrible. Anything over their sales department is trash! good luck if you have to get boosted to a teer 2 or 3 because that basically mean no one knows what the problem is and the don't really care either. Well we have been back with Comcast now for a few month I just recently had to change things around but the relative plan was to remain the same. Woke up 2 days ago with a notification that we are close to exceeding our data. My half sleep addled brain assume it was for our cell phones that have a what 22 gb max and they just throttle your speed down to basically nothing. I wasn't concerned because that will reset in a few days . Then tonight I was lookin at my accounts and noticed that we went from using 294gb of data to now a full [Edited: "Language"] terabyte of data? um no. Its just been me and my youngest home, my oldest is with his dad the other 2 are only here half the time and only none device has been connected to our xfinity router so I know this isn't right. I talked to a service representative and all he had to say was oh you can upgrade to our unlimited plan for $5 more dollars a month added to your monthly bill.  At this point I will most likely end up doing it because I don't want to get a bunch of overage charges for stuff even though I'm not even using that much. But to see how many other people are having the same problem as I am is disheartening that not only can xfinity create choke holds to basically block other high-speed service providers to be allowed in an area but they can make up what ever arbitrary numbers they want to for your data usage and get away with it. I truly hate that we need a fast functioning home wifi living in an area that is monopolized by such a corrupt corporation.  

I also saw an inexplicable increase in data usage in March, April, and May with only April and May being over the limit.  May ended with data usage more than 30% over our average usage.  Charging me $50 of course.  Something isn't right here.  I worked from home all of 2020 and 2021 (data intensive 3d modeling work), with people using laptops, tablets, and streaming TV in other rooms and never went over data.  I went back to the office end of March and NOW I'm going over data?  I don't think so.  Currently on hold with customer service (and I use the term loosely) for over an hour now.  She put me on hold to check on something, I don't think she had any intention on coming back.  So Xfinity, what kind of racket are you running here?

I have the same issue. They keep saying it's on my end that someone's in my network however there are no attempts. And yet I'm going through gigs just to stream on one television. And it doesn't always work even then and it is hardwired in.

I am paying almost $80 for our almost "unlimited" internet. I was told when we signed up that even though we didn't have quote on quote unlimited internet that we had so many GB that we would never go over. And, we didn't go over, for while anyways. Everything was fine for over a year, never going over. Then all of a sudden a few months ago we are getting these messages saying we are going over. It makes no sense because the TV is only on a few hours a day max. We work full-time. Nothing has really changed. We are paying a lot for this stuff to be happening. Plus once we do go over we get charged. Its a scam. Everytime i tell people how much i pay for the service we have, or lack of service rather, their shocked. Not only that but you have to pay a outrageous "convenience" fee" to pay your bill online. Its just all ridiculous. I am seriously at the point of considering checking out other internet providers. 

I have filed a complaint with my state’s Attorney Generals office regarding this exact issue and I urge others who have has this happen to do the same. What a coincidence that the app removed the function to monitor and see data usage by device, and shortly after my data usage goes over the limit with no change in data habits. When I call to inquire, Xfinity pushes the unlimited data package at a higher cost. This seems like a consumer protection issue and seems fraudulent. We literally live here only 1/2 time. It is impossible to be using the amount of data Xfinity claims I am using and they have no way to check and verify what exactly is using the data. 

After getting nowhere with Xfinity, I have filed a complaint with my State Attorney General so they can investigate and find out of Xfinity is engaging in this practice on a wide spread basis. It’s the only way consumers will be protected. 

I have also been a Comcast/Xfinity internet customer since it came to town (20-25 years ago--and I have been a Comcast TV customer since 1980).  Prior to January of this year my highest data usage was 711 gb, but ranging from the mid-400s to mid-600s. I never had a data overage. 

I am just starting to research what began happening in January of this year---since that time data has ranged from 1200-over 1500.  This is with only two of us in the house, no change in equipment, no gaming and very little streaming.  There has been no change in our behavior.  Well, to be honest, an adult son lived with us Jun-Dec of last year, working from home, frequently on zoom, and streaming way more than we do.  And in December, another son was also home.  If we were going to have higher data usage, it would have been June-Dec, not starting in January.

I, like many others, am suspicious of what is going on.  

After over 40 years of loyalty, I am considering going elsewhere if I can not get a resolution to this problem.  Xfinity employees--don't suggest unlimited.  I will not purchase something that I don't think I should need.

Why is my data usage suddenly up nearly 100%?

Same here ! I used 400-600gb a mo for the last 12 mo and suddenly this last mo it’s 900. I called them and they are so clueless ! I finally spoke to the right dept 

Yup, something is definitely fishy here. I too am about to go over the limit for the first time ever (at this rate I will be over the limit in the next few days). I have no way to prove it but I feel like there is some shenanigans going on here. It reminds me of last year when inexplicably I went over my 3 gig data limit for Xfinity mobile for the first time in 2 years and somehow started getting super close to the limit each month thereafter despite my best efforts to stay under. Funny thing is, at the beginning of each month my data usage on my phone and on Xfinity's end would match or be very close to each other,then slowly over the course of the month Xfinity's usage would gradually get farther ahead vs my phone's reported usage (by the end of the month it would be up to 300-400MB difference (on a 3Gb plan!)). I was about to make a post complaining about this "issue" but then suddenly it went back to normal and my phone's data usage matches pretty close for the entire month again. I'm gonna be [Edited: "Language"] if I go over the 1.2T limit and then obviously will again next month getting charged when something is clearly wrong.

For two months now I am down to 75 GB/month after company IT fixed my Outlook program.

Xfinity shows my data usage July 2022 is twice my usage all my time with xfinity.

I did not add any new internet service and on July my data should be as average my every month data. Could that be because I did change my modem?

I have been a Comcast/Xfinity customer for over 25 years.  I got an alert this month that I’ve used almost all of my 1229 GB  plan. I’ve historically used 400-700 GB. I haven’t been home much this month nor is there anything I have done differently this month.  Is this an xfinity issue?

Very disappointed to read that the Xfinity excess data scam has been going on for way over a year without resolution by Xfinity. This is our first month to go over our data limit. Until July, we’ve always been at least 200 GB below our data limit. No change in our internet usage habits. Shocked that we’re over limit with only two living here now. If we were ever going to exceed our limit, it would have been when our two kids lived here during their  teen years. Both of them did a LOT of gaming, viewing YouTube, etc.  Friday July 29 at 6pm was when we got Xfinity text saying we had exceeding our monthly limit of 1.2 TB.  Not.At.All.Realistic because both of us were away from home All.Day.Long!  

I’m not going to tolerate the excess data scam. I’ll contact Xfinity first. Not optimistic because almost no customers in this forum have gotten acceptable resolution from Xfinity. There’s No Way I’ll pay for unlimited data, especially knowing that the problem is with Xfinity.  

Tomorrow night we’re going to check our data usage on website. Then unplug router and modem overnight. If we check data usage the next morning (before reconnecting Xfinity) and Xfinity shows that we used more data while disconnected, it will be obvious that Xfinity is being fraudulent. 

Considering other options and will very likely terminate Xfinity, after using Comcast/Xfinity for 22+ years. 

I plan to file complaints with the FCC and the Texas Attorney General. 

In 10 years of using Xfinity internet I don't believe I've ever went over 300GB in a single month and it's usually much lower than than. Last month my data usage jumped up to almost 1200GB so close to going over the 1229GB allowance. I use my own modem/router and it tracks my data usage which says I only used 280GB last month. So far in just 9 days this month Xfinity says I've already exceeded 350GB which is impossible unless I were streaming/gaming no stop all day every day which I'm not doing anything different than I ever have. I've contacted Xfinity several times about this issue and they don't seem to care. Either my router's data usage tracking is wrong or Xfinity's is, considering my data usage history and the astronomical usage I'm experiencing in just 9 days this month I'm going to guess something is wrong on Xfinity's end. I've spoken with the Security Assurance department and wow that was a waste of time. In fact so far everyone I've spoken with at Xfinity has been a huge waste of time. I still have my courtesy month for going over my data usage but I sure wish Xfinity would show a little initiative and help me figure out where all of this is data is going before it gets to that point but that might be too much to ask for considering their response so far. By the way I've checked my network for any strange devices that could be stealing my data and devices found are known to me. 

I've contacted the security assurance team and every other team at Xfinity about this exact issue only to be ignored. The security assurance team's exact response to me and I quote "Contact us again when your data goes over the 1.2TB limit". Last month my data usage shot up to almost 1200GB, that's about 900GBs higher than it's ever been in my 10 years with Xfinity. I'm 9 days into the new billing cycle and its already over 350GB when my router shows I've only consumed 75GB in that timeframe. As soon as this costs me a single dollar I'm cancelling my TV and phone service. I'll have to keep the internet because there isn't a better option in my area at this time but I won't spend a dollar with Xfinity that I don't have to spend if this isn't resolved.