xfinity Customer Service and Payment

xfinity Customer Service is terrible. I had an issue with my payment account. When I discovered that I could not contact a human being using chat or find an email address where I could contact a human being, I went to the xfinity store to pay the bill in cash. Well, they don't handle cash at the xfinity store for bill payment, internet or mobile. However, cash is always a legal way to pay debts, especially if it is the only way to currently pay and the persons wanting the payment want the payment. So they tell me to call 611. By some miracle, I was able to talk to a human being. This human being assures me that my phones will not be turned off before the end of the month so long as I make all payments and change my card information by then, considering my situation. We are a week before the end of the month and already I had a text message from xfinity talking about "debt collection". Good job xfinity, your Customer Service is garbage!