Downgrade or cancel service

I got into cox, thinking it was a good service and affordable but little did I know, it *ucks so bad. The internet started out fine then turned into the worst, I got my phone plan (which I was informed by their sells person included unlimited long distance) and started receiving a extra charge of $50 a month on three of my bills, found out that he set my long distance up as limited and to change it over I had to pay even more money, oh and I was responsible for all extra charges. I feel like I signed up with a bunch of crooks but to be honest, most crooks will at least tell u that their going to rob u, unlike cox. When I signed up for cox, I was told that my bill would be about $180 a month for the bundle, never was, after they signed me up, they bend me for $220 a month. I hate this service and just want to leave, unfortunately I am under these crooks contracts, how do I just downgrade everything in my bundle to the bear minimum and ride out the crooks contracts. Never again, don't be fooled by their b.s...