Monthly Data Usage Exceeded 1.2TB

Exact same problems, starting around the same time. Xfinity is no claiming I’ve used an entire terabyte in the first two days of May. Online support was absolutely no help

We are experiencing the same issue for the last few months.  Our data usage has spiked an alarming amount to the point that I have stopped streaming TV (only watching broadcast) and have cut back drastically on amount of time accessing the internet. I have reached out to customer support a few times and they have been absolutely useless. It's nearing the point that we are paying for a service that we cannot use. We are beyond frustrated with the lack of explanation from Xfinity.

@user_hzhdw5 Thank you for connecting with us here in our community about your data usage. We are sorry to hear about the sudden change. We are glad to see you have taken steps to protect your network. Here: https://www.xfinity.com/support/articles/data-usage-what-counts-towards-my-data-plan is a helpful article as well. Have you added any new devices in the home, like security cameras or appliances that require internet? Have you downloaded and new streaming apps that may stay running in the background of your devices if you do not log out completely? There are some apps that will do this, and you would have to check all your devices for this.

I had the same issue all of a sudden, then I was billed for  overages.  I never have received an answer of what could be causing the overages.  I live alone and am gone all days M-F.  All the comcast representative was offer me another plan.  So now that I am on this new plan, it is funny i have had no overages.  I am really upset about it  and to top it off over a year ago comcast representatives busted my waterline and my water bill was $100 - I spoke to someone and he said well want do you want and I said to be reimburse for the overage.  The same crew left a huge hole in front of the ugly green box that they placed in front of one of my bushes.  Not on the side or anywhere to conceal it. right in front of another bush.  I had to fill the hole in because I was scared someone woulld have hurt themselves it would be on me.  THEY HAVE DONE NOTHING.  THE NEXT SCAM THEY TRY TO PULL ON ME, I AM OBTAINING A LAWYER.  I NEVER GOT AN ANSWER AS TO WHY MY USAGE SPIKED AND NEVER WILL.  

Very disappointed with comcast.  I used to brag about how I loved it, but now I just feel like a used victim.

[Edited: "Personal Information"]

Hi, I'm experiencing the same issue. My 1.2TB suddenly spiked from 256 gb from last month.

I am having the same issue.  I am a teacher and have gone back to school this month and have received notice that I'm at the limit of my data when I'm not home at all during the week and just stream TV periodically on the weekend.  I have actually reduced my usage and I got an email at 12:20 AM saying I was at 75% of my usage for the month (it's the 19th) and again today at 7:25PM I got another email saying I've used 90% of my data.  In other words, I somehow used 15% of my monthly data while I was sleeping and then away at work for the day.  This is ridiculous.  You can't get anyone on the phone, and if you do, they cannot help.  Xfinity is a scam and stealing money from customers.  They should be ashamed of their business practices.  This has been happening for several of the last few months.  Unbelievable.