What must i do to cancel a Contract

<p>Will never in my life use Telkom Mobile again. I took a contract with then 2 and half years ago, when the 2 year finished I went to Telkom in Menlyn to cancel, the consultant told me someone will call me in 30 days, I was debited again that end of month, I went on the internet talking to a adviser, he told me it will be sorted, the end of month they debited again. I went to Telkom menlyn and again the guy told me again will be called in 30 days, nothing happened, I was debited again, then suddenly I receive a call that my account was handed over for not paying. I then spoke to another adviser on the website who spoke to me and then just end the call, and I see again today I was debited. What must I do to cancel this policy!!! Pathetic</p> <p> </p>