Trapped in a contract

I am completely DISGUSTED with Autopage's service! My contract is over and I want to get out of the contract due to the terrible service I received during my time, could never load data timeously etc.I put in 30 days Notice on the 2nd Dec 15, phoned 5 times to make sure I would be on prepaid by the 14th Jan. Bought prepaid data. On the 17th Jan was loaded with my data bundle for the cycle Jan- Feb. Phoned to complain, said they didn't push it through for cancellation yet. Phoned 4 times , was told it would be onto immediate cancellation and they will get back to me, to no avail. Don't know what to do to get out of this contract. Considering going to the consumer protector as this is a complete breach of contract THAT I DONT WANT AND SHOULD BE OVER!!!!!