My ex is has been using my account!

Greetings, @user_c57498! I hope your week has been treating you well. Thanks so much for taking a moment out of your busy day to leave a post on our community forum. I'm sorry to hear you're having issues with an unauthorized user, but you have definitely come to the right place for assistance.

If you are the primary account holder, you can actually log in to the account and delete any other users yourself. The steps are all outlined here: https://www.xfinity.com/support/articles/delete-username-from-account.

If you are having issues with someone else using your own, primary login, and changing your username and password has not corrected the issue, then you may need to reach out to our Customer Security Assurance (CSA) Team for assistance. These security professionals are absolute pros at handling situations like the one you described. They are available by phone between the hours of 8am and 12am (EST), seven days a week. You can also submit an abuse report online at https://internetsecurity.xfinity.com/help/report-abuse/, and someone from the team should follow up with you.

We don't really have a way to remove people who are logged in to your Xfinity Stream account, but we can definitely deprovision all your devices, so that everyone will need to log in again.

If you could send our team a private message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you.

To send a Private Message, please click on the chat icon in the top-right corner of the screen, next to the bell icon, and then type or select "Xfinity Support" to initiate a live session.