Canceled service over 10 days ago, Paid, Now, Got a Past Due bill and late fee $40 more

Do your thing, respond so I can give you details. Wasted 2 hours trying to cancel on Dec 9. Was successful. Got email on Dec 10 that it is disconnected. On Dec 9 paid on the phone what was advertised to me as a prorated last bill and was advised and instructed to turn off auto bill. My "service" 3 months ago cost me $42 a month with a bank draft. Then I changed my payment cause I am jobless, to a credit card and the charge became $80 for the same "service" about which I have had to file a [Edited: "Language"] FTC complaint months ago for weeks long outages and constant outages to get a meager "credit" back while continuing to experience more outages.

This is xfinity. 

I am not paying a dime because I have been lied to so many times and cannot trust a word I hear on a phone or in store as long as it is not in writing from an xfinity person.

So Xfinity causes its customers by lies to face shock bills and late fees and overbilling upon exit. Even if you call them to cancel on exactly your billing date to make things smoother. Nope. They have systems that are still stuck in the 80s, work just like banks. Imagine if you canceled a credit card and got a bill about it after you canceled for some "fee" they tacked on and was not at all explained to you and you were lied to about not owing anything after the cancelation.

Then you call and yell at them in frustration because one should not spend 3 hours on a [Edited: "Language"] service CANCELATIon WHEN NO EQUIPMENT WAS EVEN INVOLVED TO BEGIN WITH... only to receive the wrong end of customer service and spend another 45mins before I can get past the "AI" and your overseas [Edited: "Inflammatory"] who just read from a script until I was able to speak with a supervisor. 

But listen to me go yelling into a hole on the internet [Edited: "Inflammatory"].