Does anybody at MTN know how to assist a client?

I got a new contract activated on 21/06/2015, and have since had a problem with network coverage. due t my line of business, I cannot afford for my number to be unavailable at any period of time. I called the customer care center on 25/06/2015 to cancel this new contract and was promised to be emailed back with the cancellation details including the cancellation amount as the lady who helped me was unsure of the facts. I called again this morning and was assisted by Jasseen who told me to go to the store where I purchased the device. I drove from Randfontein to Sandton where still nobody could assist me, they referred me to the call center. REALLY? How can all these employees not know how to assist a client in cancelling their product? or is it all a **** to get clients not to cancel?<br> SOMEBODY PLEASE HELP ME CANCEL THIS CONTRACT.