Dead end when trying to cancel MTN expired contract

My experience with MTN and its employees has been disappointing to put it mildy. My contract expired at the end of December and I emailed the address on my account statement on 17 February to cancel the contract. After following up 2 weeks later I was given another email address and told that the original email would have been forwarded to the cancelations department in any event. The lady did not want to address my request over the phone and insisted I send another mail. After more than a month I have not received a response to my second mail and my debit order is still being deducted like clockwork! I have tried to phone the cancelation dept. several times but when my call is transferred I am cut off after holding on for a while. There is no end in sight with no other channels available to contact the cancellation department. Had I indicated my wish to upgrade the contract I would have been contacted on the 17th of February when I sent my first request. It's a pity that your employees don't realize the power of customer referrals. I would never recommend any friends or family to a company that is only interested in sales