Non existant MTN service

After many years of being a LOYAL MTN customer with 4 contracts it seems MTN does not want me as a customer anymore. On Friday 2nd November I attempted to do an online upgrade on one of my contracts. After an e-mail back to say the application was successful and that a Service CHAMPION would call me back within 8 hours, nothing has happened since. On Tuesday I attempted to call the 135 number and all that happens is you are sent around in a never-ending circle and the automated voice tells you to speak to a Service Champion. How on earth do you get to this supposed Service Champion? I do not think such a person exists. I went through the same process yesterday and again today even getting to a call Center on a 031 number only to be told that although they are a MTN customer service call center they cannot help me. So what do they do then? Bad, bad service MTN. Maybe I should become one of the 300 000 to leave!!