Mediacom Cable and internet has not worked in over a week. They have not repaired it, and they will not let me out of my contract without paying a termination fee columbus, Georgia

I have been with Mediacom since Sep 2010. We have never been happy with there service. The cable and internet do not work for a minimum of 6 or 7 days/month. We have to call once a week to try to fix it. The phone calls take at least an hour every time we call, and the worst part about it is nothing gets resolved. Then they send a tech. to come fix it wich takes at least 3 days. He will then fix the problem, but 3 or 4 hours after he leaves it does not work again. This has been going on for 5 months.
Currently our cable and internet has not worked now for 6 days. I call to terminate my service with them. They said I will have to pay 190$ termination fee, because I have a contract with them. I told them I will not pay the fee, because the can not provide me with serviceable cable and internet. They said they would report this on our credit report. I don't see how they can charge me, when they can't hold up their end of the contract by providing me with proper cable service.
I just want out of my contract without paying a fee. I get charged full price every month, and do not get service for at least a week out of every month.