Trying to cancel a contract for more than 6 months

Phoned 808 trying to cancel 2 cell phone contracts.-(On my own) I have written e-mails and also filled in cancellation documents at MTN Mafikeng. After no success MTN Mafikeng phoned again on my behalf to cancel the contract-I was assured That it would be cancelled from the lady in the store. Yet MTN is still deducting money from my bank account. I want these contracts cancelled immediately. I would also like to be reimbursed for all the money I have lost. It takes only a few seconds in a store for people to jump to sign you a new contract. They never tell you that you will keep on paying till the end of days.

Come on MTN do the right thing cancel this contracts and stop taking my money for nothing!!!!