Account Owner

I have tried several times to correct the owner of my Xfinity account. My sister opened the account in 2024, but when I moved here in 2025 we went together to the Comcast/xFinity store and filled out paperwork to change ownership from her name to my name. A few months later when we realized that had not happened I called Xfinity and explained the situation and was assured it would be fixed. Recently I again realized that it STILL has not been corrected. I chatted with an agent and was assured yet again that the issue would be resolved, but just got a text saying that it could not be resolved and the ticket was closed. This is beyond frustrating. Now the account has a mash up of my and my sister’s information, and she is unable to connect to her own account because you still have her listed as owner of MY account. I am not sure where else to turn to get this resolved as we’ve done in person, phone calls and chat and nothing works. My next step will be to file a complaint with the BBB if this issue doesn’t get fixed.