Does anyone still work for MTN?

Its been morethan 2 weeks since I tried to get hold of someone regarding my account that's standing now on over R6000. overR6000No one from headoffice has even rep**** to any of my HelloPeter cases nor did they reply to any of the registered complaints I logged at MTN stores. The people from the stores are really trying to assist me but even they can't get through to an agent or they also just don't get a response to anything they log on their systems. It's nearly the end of the mo th and the debit order will be going off soon. I need to know how they can charge me so much. They people in the store have many complaints of over charging just like my case. No one gets back to any store or client. I used to think MTN was the best network, but now I really need to think again before taking another contract through them. I think I must just cancel the 3 or 4 contracts I have and go somewhere where I will at least get someone at customer services to take my call.