Waiting 2 weeks for a response.

I upgraded on the 2-10-2017. I could not sign for the delivery of the device and asked if they can please cancel the upgrade. Since the 3-10-2017 i called them 23 times asking if they could please cancel the upgrade still nothing happend. They told me every time someone is going to contact me and that they have send an email to the person who is going to contact me. Its been 2 weeks still no one has contacted me yet!!!! I am very disipointed in MTN. I have been using them for more than 6years now. Every time i have to call the callcentre its costing me money because its not a toll fee number. Waiting for more than 25min to get a awnser and to be told the same story. I would not recommend them to anyone anymore.