Impossible to cancel MTN contract

I have been trying to cancel my MTN contract since April. It lapsed at the end of April and after failing to get a response from the call centre I sent a written letter confirming cancellation. <br> <br> For 2 months no one responded, despite more phone calls, and the only thing my local branch could tell me is that the call centre was on strike and that I should just try harder to get through to the call centre.<br> <br> I cancelled my debit order but somehow payments are still being deducted from my account.<br> <br> I have received various emails from call centre operators advising that they are processing my cancellation. Obviously all responses I send are to a \call centre pool"and it is impossible to deal with one person. It has been nearly 5 months and still this matter is not sorted out. Last week I was notified that my cancellation was processed and confirmed and that I would be refunded for the extra months after my cancellation notice. This morning a further payment was deducted from my account!<br> <br> The service that I have received from MTN has been pathetic and has cost me time"