Can not ever get through to talk to someone

I cancelled my contract 05/05/2015 ***. Since then I have been informed twice from the shops that the number is on prepaid, yet the contract amount has been deducted twice from my account. The number stop working and I was informed that I need to do a sim swop. Did the sim swop but my number is STILL not working. Trying to phone 808 is a nightmare. You can never get a consultant on the phone. First call I have been holding for over 40 min. Then got cut off. Second call after every 1 - 3 min I got cut off. Third call holding for 25 min then got cut off. Forth call holding ... and the frustration goes on and on. Countless attempts to speak to ANYONE seems fruitless. MTN is the most pathetic service provider in South Africa!!!!!