Xfinity keeps charging me for mobile acct I don't have

I have contacted xfinity mobile multiple times since December 2021, canceling a mobile account that I never even activated. It is now April 2022 and I am still being charged and emailed as if I have an account with bills. My next step would be legal action if necessary, I have confirmation of cancellation even though it was never activated. Not sure what the issue is but I need it resolved. I had my card on file canceled and issued a new one as to stop the fraudulent xfinity charges.