Overcharged Issued and being charged after cancellation.

In June, I spent 6 hours on the phone with various Xfinity support tech's attempting to rectify a $500 overcharge on my mobile phone bill. I was ENSURED that i had been transferred to the unlimited plan to rectify any data related issues moving forward. Though it had previously been $60/ month for unlimited data it had been bumped up to $80 which seemed ridiculous, but I accepted. At the end of June I was charged $184 for excess data usage. I contested these charges through my bank, which offered a temporary reversal. However in August, after attempting to dispute these charges with Xfinity and evidently failing, I was recharged this amount. At the end of July, I was again charged $188 for my unlimited data plan. Again I attempted to refute these charges and was denied. 

Eventually, come August, the system seemed to correct itself and CONFIRM that I had unlimited data from June onward. 

Having been frustrated with Xfinity's lack of transparency in billing for the past many months (starting the service as a pay by the gig member and upping it to unlimited data when needed, as promoted, but never being able to see a record of when these adjustments were made) I eventually cancelled my plan in August and received confirmation emails that our lines had been disconnected from the Xfinity Service. 

I received a $6 credit after receiving confirmation emails that both of our lines have been disconnected.  Since then, my bank account has been informing me every month that I am being charged for services I am no longer receiving. I have disputed these claims through my bank but often the disputed charge is reversed by xfinity pushing through the amount on their end. There is no option online to remove my credit card information as there is NO RECORD of my account within the Xfinity Mobile portal, including the payments it has been pushing through, even though I am still an Xfinity Internet customer. 

I was never informed that Autopay would continue to be pushed through after a service is cancelled. This is something that NO other company has ever attempted and is an offensive tactic used by such a large company. I am honestly shocked and appalled at the flippancy of customer service and the difficulty it takes to resolve simple albeit ridiculous issues like this. 

There needs to be a better way to directly communicate with effective staff members to resolve claims and issues as these and others. 

I do not always have the HOURS needed to jump through the hoops of being transferred, sometimes through 6 to 8 different people to resolve issues. And the employees as the brick and mortar stores inform us that they are not able to deal with billing matters that we must call to do so. 

The run around is INSANE and I do not know how to be effectively compensated for all of this [Edited: "Language"] or how to effectively cancel these ludicrous charges.