Worst Customer Service Ever

I have attempted to cancel my service due to moving 4 times, today being the 4th time.  I keep receiving the automatic payment coming soon emails, even though I moved out weeks ago and my service should have been disconnected.  The new homeowners also have Xfinity, so you would think they would understand we can't have two accounts from different people at the same address.  I asked to confirm that I will not receive another bill and was told that if I do receive one, I have to physically go in to a store for a refund.  The thing is, there are no stores near me.  The AI chatbot is also completely worthless.  If you need help from this company, don't expect to get it anytime soon.