Still seeing a bill due even though I canceled service

I called xfinity twice and both times I was told my service was going to be canceled, and all I would need to pay was something around $4. On the first call, this person said she would take care of it and everything would be good. After a few days I still see a bill due for my regular bill amount. So I call back. This guy says he's gonna take care of it, and all I would be charged for ending the contract was $4. Okay sweet sounds good. Well it's been over a week later and I still am getting alerts through text about my xfinity service being down (which implies I still have an active service), I still have a payment due coming here in a few days, and I still have not seen this mysterious $4 charge thats supposed to cancel my account. I just need someone to confirm my service is done. I got an email that says "We received your cancellation request and we're working on it." Like what do you mean you're working on it? I need confirmation that it's over, I need the upcoming bill cleared off my account, and I'd like to stop receiving text alerts about an account that should be closed.