I've had several friends whose contracts ran out, and their bill price doubled. When they called to see what they could do about it Mediacom basically said they wouldn't negotiate with them at all or offer them a new deal and that they would have to pay the doubled cost. So needless to say the friends mentioned went with Century Link/DirecTV.
Not surprising. Wife and I moved and had to cancel the contract early (which we both knew we had to pay a fee, and won't complain about). I went into the store in Ames and paid $60ish to cancel.
Month later, she is checking her online banking and notices they charged her for the next billing cycle after we cancelled. She called up and the person said it would take 2 weeks to get a refund, in the mail. I have no idea how they think that is good customer service.