Sudden huge increase in internet data usage

Within the past week I’ve seen a sudden and very unusual spike in my data usage like amounts within hours I should never be able to do on my own.  And it is clearly abnormal from my past months. I’m looking at some huge charges because literally It is telling me I’ve used my whole months allotment within the first day of the month. I received the 75,90, 100% useage emails literally within minutes of each other. Xfinity has said they won’t send a tech out to look at my apartment building which has the internet cables currently exposed in several places and even a cable splitter at one of the locations, even the apartment manager said xfinity should come look when I emailed them about this issue. All xfinity does is they keep is trying to upsell me to a new package which I don’t need. And they won’t investigate into my case any further because at this moment there is not a spike and yet that doesn’t help me because my internet is still over and I’ll only continue to go up.

I’ve tried everything on my side, factory reset my router, changed passwords, looked at connected devices and yet I still had my usage going through the roof. The call today I received said I would most likely be charged this time around for the overages when the first ones that were waived were from this same problem. I can’t afford this 

What is going on with the huge increase in data usage? My habits have not changed and I spend very little time streaming ANYTHING. This is ridiculous and a good way to lose customers. 

For those of you who complain about Xfinity on data surge and overage charge issues, check this estimate Xfinity had back to pre-COVID stage. It might be true before COVID, but it's certain not the average user usage now. Many people have moved to work from home instead of office and require a lot more internet usage for work and entertainment at home. I think 1.2 TB data limit is not difficult to reach if you have multiple users and multiple devices (5+ computers/tablets and 3+ phones) and gaming/streaming per month. However, Xfinity has been generous to offer unlimited data plan at $30 for non-rental users and $25 or less for users rent their modems. Meanwhile, if you live in Midwest and use Mediacom, that's basically a scam. Their data cap is totally a joke in nowadays and their technology have not been upgraded for decades. I used to use their internet service more than 10 years ago, but they were slow and had signal drops frequently. Check details of internet providers on their data caps and data overage fees and whether or not they offer flat fee for unlimited data usage at https://www.cabletv.com/xfinity/data-cap#:~:text=According%20to%20Xfinity%2C%2095%25%20of,%24100%20in%20total%20overage%20fees.

"According to Xfinity, 95% of its home internet customers don't hit the 1.2 TB cap, and the average Xfinity customer uses only 346 GB of data per month. Xfinity charges $10 for additional 50 GB blocks of data once you exceed the cap, but it won't charge you more than $100 in total overage fees."

I received a text and email stating I had used 90% of my internet for the month. I have NEVER been close to reaching this limit before. I have not changed my habits or added any devices to my network. What has happened to account for such a huge spike in my internet usage? 

I am experiencing this issue now.  I normally am at about 500-600 per month.  Then all of a sudden in March it went to over 800.  And now in early April today, I am already at 90% over 1200.  This is ridiculous because this morning, it was at 75%, I left my home, no computer, tablet, tv or anything connected or on and when I got home it says I was at 90%.  How could data be used if I was not home with anything on?

I am getting no help with chat as they tried to tell me to upgrade when I have not changed my usage at all.  This is ridiculous and very frustrating.

I have had the same thing. Normally about 400-450 GB/Mo then over 1TB in December and March (Jan & Feb around 400GB). I was AWAY for 10 days in Dec and Mar which makes its more crazy. One day apparently was 750GB (WHILE I WAS AWAY). Changed password, virus scan and Network Utility not show any unknown devices. There was at least one report in 2019 in Are Technica that there was a software bug in Comcasts end. I've spoken to Security dept & they have denied any software bug on their end.

How many other users have had this problem?

I have had the same situation. Average 400-450GB/mo then in Dec & Mar over 1TB. I WAS AWAY FOR 10 DAYS in both Dec & Mar, and no one stayed at my home.

In Dec I changed my PW, did virus and LAN scan and found no infection or unknown devices.

As I own my modem (Motorola) I cannot use XFi to see details of usage.

OIve spoken to Xfinity Security and basically got nowhere.

Any one else have this problem?

There are so many customers that have exceeded the cap. Many are not on this forum and many are. I have exceeded my usage once knowing the first time is free. After that the cost adds up. I have used Glasswire to track usages of my stuff. After putting my firesticks to sleep my usage is almost nothing. This month for April my usage through the 9th is about 139 GB. I stream on my computer and one tv with a firestick attached. My other TV's are asleep. The firesticks will use data when off unless you pull the plug on them or put them to sleep. Change your PW and check your daily usage. Glasswire is free but the paid version is great! Good luck!!!

We went from using 300 GB average per month to suddenly 610GB for month of February 2022 and 1610 GB (over 1.2TB) during month of March 2022. Called Xfinity absolutely NO HELP. Visited their local retail store for assistance NO HELP. To this date for current month of April 2022  projections are I am going to exceed again this month as well. NO change in our life style, no addition in our devices, no increase of any residents (2 of us in the household) Why this sudden increase? I was told to change name and password of the network, which I did. Why this sudden increase? Xfinity any answers? Please do NOT scam seniors, or for that matter anyone.  Scam your shareholders and see what happens.
Un happy with the outcome to date

Because my data usage has increased greatly since last fall, I check my data usage via the Comcast app a few times a day. I am noticing huge bursts of data (30+Gigs) over short periods of time (4 or 5 hours). this seems extreme even when a few of us are on devices. 

I range from 650 to 800 GB a month normally when all of a sudden in January my data spiked. Nothing has changed, we haven’t gotten any new devices, we’ve been doing the same thing for months so not sure why we randomly had this spike. They “waved” the first overage fee. February we were fine, ranging around 800 again. March spiked a little at the end of the month saying we reached 90% the last week. Now we are in April. It’s been 12 DAYS. I get a notification saying we’ve already used 90% of our data?! We have two phones and a tv which we don’t even use the wifi on our phones! We are always working - not even home and yet we’ve used 90%?! I called customer service and was transferred to the security team where the representative told me it was definitely impossible for me to use 90% within 12 days and that someone would be calling back to get this fixed for me as she said it was an issue on their side. So someone calls back and the guy basically blamed me and said he cannot wave any overage fees for this month! I asked to speak to a supervisor and he told me it would be 3-5 business days before that could happen. Completely outrageous. I need someone to reach out to me as soon as possible. This is really sounding like it’s a scam and it’s completely messed up. 

I have a 400 bill now. I live at my apartment alone. With my dog. I barely use my laptop. I listen to music when I'm home and awake. And I would leave the TV on for my dog maybe 6 hours a day. 1 phone using wifi. How do I go over  my 1225 plan as well? 1.2 Tera? Like this is insane. I called last month all they said to do is change my password. I'm half way through April at almost 700 gb again? Is Comcast stealing from us? Making up these numbers?

Has anyone gotten any type of resolution for this? I'm not paying a penny more then my monthly and fighting this. It sounds like this is happening to more of us. Same thing usage is same for months-years then slowly increasing quietly while we never monitor it because why would we? We never should even be getting close to going over the 1.2 Tera plan. Scam to one steal from us. Or two scare some of into paying 30 mo more for unlimited whereas there is no reason for us to even need that much for usage.  Company needs to take care of this or they will get sued by someone or this should be investigated 

My wife and I have loved our level of service to include the customer service that Xfinity has provided up until December 2021. We have been able to work from home during the duration of the pandemic and nothing has changed until I received an phone notification in December 2021 stating that I was near my allowable Data usage. All of this was hard for me understand seeing that no new devices were added since the beginning of the pandemic and looking at previous data usage, we have always averaged between 300-400GB a month. In the month of December 2021, it jumped up 500GB to almost 1TB used. Then the month of January 2022 hit and at the end of the month, it went over the allowed usage and Xfinity attempted to charge me. They made the situation go away by providing me with a credit to cover the overage, but not fix the problem. It was mentioned to me by the data security department that I may want to change my password as well as my modem so I did and my usage went all the way down to 281GB for the month of February 2022. I wish I could say the same for March as it shot right back up to over the 1.2TB limit, but once again Xfinity gave me credit. I’ve had multiple calls with Xfinity and Xfinity technicians have come out and no one can figure out the problem as there is a definite usage/service leakage, but Xfinity is not making the real effort to find out what is wrong. Neighbors lines could have even been crossed, but still a technician has not checked the box coming from the ground in my neighbor’s backyard or in the neighborhood period. The only thing Xfinity tells me is that I can upgrade to Xfinity Complete, but why when it’s just two people in my house. We keep getting blamed for something that is not our fault. I can understand if we were running a server farm, but we’re just two hard-working individuals who want to be treated fairly.

Can anyone provide me a contact before I decide whether or not to cancel my service? Thanks