Sudden spike in data usage

Same thing here! So frustrating, their customer service is even more so! Everytime I call I get tranaferred from agent to agent, have to get reverified everytime and they all ask and suggest the same thing. Yes, I've restarted my modem, yes I reset my password, yea I can track the data. They are insane and say that on August 2nd we used 260Gb?!?! How is that even possible?! "Well ma'am, streaming uses a lot of data". All the while pushing their unlimited. What can possibly be done? Can the FCC do something? BBB? I'm at a loss and this unacceptable and flat out robbery when I have to pay for overage data that we certainly did not use. 

Same issue for us!! Everytime I've called it's the same runaround and get nowhere, all while they push their unlimited. Xfinity is saying we used 260Gb in one day in early August. How is that even possible? With this many people, can something be done? FCC? BBB? There is no way this is legal. It is not only completely unacceptable, but flat out theft and robbery, when they are charging for overage data that I clearly have not used. 

Also having this issue this last month. At the end of July Xfinity took the network down in our area to upgrade the system which is when my problem began. Once back online I noticed the huge increase in data being used. Having Google WIFI mesh system I am able to see each device connected to my router, and how much data each is pulling real-time, hourly, daily, weekly, etc. Using this I am able to see the phones are supposedly using 24GB in an hour, two times daily almost like clockwork. This would require all phones to use the maximum download speeds my account has for the full hour. The amount of data shown used by Google WIFI matches the daily increases shown on the Xfinity app. However when looking on the phone device settings, it shows my data usage is much much less (what Google WIFI and Xifinity say they use every day is what they say they used in the last 30 days). This originally affected my Roku devices as well, but there was a Roku firmware push a few weeks ago which fixed those issues. Resetting our phones, disconnecting them from the wifi, trying to update the Goggle WIFI firmware settings...nothing has slowed the phone data issue. It's almost as if they ping the network and then there is an infinite communication loop between Google WIFI and Xfinity that races and sucks down a ton of data. I contacted Xfinity and was tried to be upsold the unlimited package, which I am far from needing in normal conditions. They told me to contact CSA Data Usage Escalations, and after being on hold with that number multiple times for longer than I have, I've stopped trying.

I am having this exact issue!

I have been using Xfinity for years, and my data almost never, if ever goes over 700gb per month. But this month, all of a sudden, I hit the 75% data usage warning on the 25th of August. Then, just now, on the 30th, 5 DAYS LATER, I got the warning that I was at the 90% usage mark. There is no way I am using that much data. I live alone, I only have one computer, and the flex thing on my TV, and that's it. I dont use the internet for anything else. There is no possible way I have used that much data. It's not that I'm scared I'm going to be charged extra this month or anything, we only have 1 day left. But still. This should not be a thing. It cannot be accurate. I have done nothing out of the norm for my download usage this month. I only play my games online, and watch my TV shows, same as always. No change in behavior. So what gives? I would like to speak with someone, because if this goes over and I get charged, I'm not going to be happy. 

I am having the exact same issue at everyone else. Average monthly usage for me is 500 GB/month and it shot up to 950GB this month with no additional usage or devices.

Its hilarious how xfinity is not bothered about it being a mass issue impacting multiple customers. This is most likely illegal as well if they are charging customers for extra usage. I am glad its end of the month but concerned that it might happen next month as well.

I've reached the end my patience. After countless phone calls and hours spent on the phone with Xfinity and their so called "customer security assurance team", I have gotten nowhere. Call after call, they refuse to help and make it rigjt and put the blame on me because I am using my own modem. Have finally decided to cancel Xfinity and rather pay the early termination fee than deal the flat out illegal and theft activity they have going on.

The same is happening to me. After never having this happen before, Xfinity has claimed I’ve went over the 1.2TB of monthly data several times in 2022 recently. Which seems unreal to me. But it wasn’t until this month of September 2022 that in exactly 7 days, I received notice from Xfinity that I’m beyond 90% usage on September 7th already. That’s over 1000GBs in 7 days. It’s my wife and me streaming/gaming a normal amount and shows data usage of over 200GBs on days where we weren’t even in the house. This is incredible suspect. I have my own modem and router, so of course they claim they cannot further verify specific device usage without me purchase their xFi Complete with their gateway router/modem. Unfortunately my TPLink only shows TX data in real time, and doesn’t show me device-by-device usage. So they’re trying to escalate my case to tier 2, but ultimately will try and get me on an unlimited plan. I’m not torrenting or running a data center out of my garage. I stream a few hours or game most days a few hours. Suspect. 

So looks like my HUGE spike in August and the same trend I am seeing for September isn't something I am only experiencing.  I will contact the Quality Assurance as suggested but after reading these posts I am holding out zero hope that it will be fixed.  There is no way my usage tripled when absolutely nothing has changed in our habits.  I refuse to increase to the unlimited plan when I know there is something wrong with the data calculation.  Have been a customer for 15 years and have never had any problem before.

Having the same issue. Can’t speak with anyone that will address the problem. Only want to sell me additional unlimited plan. Never go over a few hundred GB and now all the sudden over 1200!!!  Held on phone for over an hour for a supervisor and then call disconnected. Been a customer for 30+ years and they want to do nothing. Changed my password and it didn’t help. Obviously on their end. 

I have been having this exact same problem for the last couple of months starting in July. If anything I’m using less data because I haven't been home to stream or use my home wifi. Spoken to two security team reps that only confirm the data overages. This definitely feels like a ploy to scare customers into upgrading to a more expensive package.