Continual failure to cancel my contract

In the middle of January 2015 I phoned the call centre and gave my months notice. i was told to send an email with my request. I did this. On the 25th of March 2015 I phoned to make sure that the contract was cancelled and that the money would not be deducted. The person I spoke to was Thembie, she said that the email was on my account asking for the cancellation. She then said that the contract was cancelled. Before I hung up the call I asked her to confirm that the instalment for March would not be deducted and she assured me that it would not. <br> <br> On the 2nd of April R299 was deducted by MTN for the contract I cancelled. I phoned and spoke to Gift at cancellations. He said that my contract was still active and that I should have been aware of the instalment that would go off that month. I explained the situation to him and he said that one of his supervisors will get back to me within 2 to 24 hours and that they would investigate the matter. No one has ever called and the wrongly deducted money was never returned.<br> <br> I follow procedure and yet MTN ignored it and did as they pleased. I demand a refund as I am not paying for a cancelled contract which I am no longer using.