MTN still hasn't cancelled contract

I complained about MTNs bad service on Tuesday the 26th of May @ 10:55. I received a reply from MTN @ 11:20 the same day. Since this reply from them absolutely nothing has been done to terminate my contract and move me over to prepaid. It has been more than 14 days now and still nothing has been done. On Friday 29 May it went to another MTN store again and the request was logged yet again. Surely this is something that can be sorted quickly, why should I have to wait so long for them to do their jobs??<br> I think it is unacceptable that they can let us as consumers wait for them to give the service that we pay for. <br> This is by far the worst customer service I have ever experienced. I think service like this is unacceptable.