Pathetic customer care

I have been trying for more than two months now to change my two mtn contracts to pay as you. After numerous calls to the 808 customer care number and after sending 5 e-mails I am still battling to have this sorted. Today I again the customer care and the agent gave me a number to call *** but when callinf this number you get the message that the number does not exist in the mnt network?? How can that be if the number was given by mtn!!! <br>