MTN promises but is simply incapable of Customer Service - They lie

I am 49 days and counting trying to do a simple transfer of a business cell phone from one company to another. The cell phone is on a month to month so nothing complicated. MTN has a totally dysfunctional ESCALATION procedure and the arrongance of this organisation is astounding. I have been promised calls from the head of the relevant department Sarah and Ntokozo but they deem themselves simply too important to actually speak to a customer.