Grandma is the authorized user after I moved. Now IM getting a bill after a year of being gone.

I moved September of 2025 and before I moved transferred everything over to my grandma so she is the primary account manager. I took myself OFF. Yet, I’m being contacted by debt collectors now because she just didn’t pay the last balance before getting a new account I suppose. 

insane to me that IM being held accountable when I’m not even remotely in the same state as her anymore and have NO interest of getting xfinity where I live now. Not to mention it’s been almost a year and she has NO issues paying the bill before.