Still billing me!

I couldn’t find my original post from a couple months back so starting new post. A couple months ago I noticed I was being billed for Xfinity mobile even though I never activated my phone with them. 42 dollars was being automatically withdrawn from my bank account. I tried to contact someone for help but kept getting the run around and never talked to a person until I finally was told I could post on here AND I contacted the BBB.  Someone from Xfinity mobile did finally call me and I thought the issue had been straightened out. My money was returned and I was told my phone would be removed and my account (that I never fully activated) would be canceled.  I was warned since we were coming to the end of the billing cycle that I might see a payment come out one more time but that I would be immediately refunded. Great!! Since then not only have I canceled all other Xfinity services, I have also got a brand new phone with a totally different provider (again never fully activated phone with Xfinity in the first place), AND I gave that phone away to someone who has activated it  through a different provider. Another bill came through like I was told would possibly happen, so thought nothing of it at first. But,  guess  what? I never got refunded like promised And I have been billed again at least 1 to two more times since!! I don’t even have that phone at all anymore!!! This was supposed to have been taken care of, and  the phone was never removed like I was told it would be! When you go on the Xfinity mobile app there is no option to remove the phone yourself and no option to cancel! This is a continuous problem! Remove the phone, cancel my account, stop billing me, and refund my money, again please! I shouldn’t have to escalate this a second time!