I am unsure of what updates rain but service has become unbearable, I am being charged a high amount for services I do not receive, and every time I call them they say that their billing dept does not take calls and they will email

I am unsure of what updates rain but service has become unbearable, I am being charged a high amount for services I do not receive, and every time I call them they say that their billing dept does not take calls and they will email. They never call, currently my account is overdue and I will not pay because I have not been getting what I pay for!!!1