Awful Customer Service

In all my days, never have I ever dealt with a more incompetent, unhelpful customer service support group than with Xfinity. I had a serious issue where I had to be out of state for a very long period of time and had to contact customer service to pause my service. I racked up a huge bill from this, called customer service and they said they'd fix it. The first person said it was doable, opened a ticket that closed 2 mins later, and nothing happened. The second person said this was undoable and to have "better luck next time" followed by them hanging up. The 3rd person said it was fixable, told me the dollar amount I'd be refunded, opened a ticket (that closed 2 mins later.) The 4th person was the only helpful service individual that helped me, Emily was her name. She walked me through the refund process, processed the ticket, told me what I would get back and it was sent a couple days later. A week goes by and suddenly I have a demand for over 200 dollars for several reactivation fees and use fees when my internet has been at 0 data used for months. I contact the live chat service, an individual tells me to "wait a couple of minutes" while they look into my account, only for them to leave it to another agent. This happened several times over the course of an hour. I call in to speak to an agent, he refuses to let me speak to a supervisor and advises me that I need to meet some "requirements" to pause my service. I will never, ever be doing business with this company ever again. I am going to make sure everyone I know, that counts home owners, old and new, to never give their business to this company. You'd think after 4-years of being a customer and never missing payments, I would get treated with some respect and support, no special treatment, just human treatment, but apparently that's not in their Customer Service training.