Horrible Service As An MTN Contract Holder

Dont know what to do further with MTN. I have posted many complaints on hello peter about their awful customer care. I was contacted and giving empty promises of replacing my phone that I have with my contract and was told Westgate MTN store would replace my phone as it was problematic from he day I received it, and I was told that I should personaly take it to Midrand to replace which was against MTN policy and The consumer Protection act. The person that called me from MTN promised that my phone would be replace to get me to trust MTN again and said i would be called by the Westgate Branch. I did not receive any call just an impersonal email telling me to bring in my phone to be repair which would take up to a month. All this after I explained that my phone provides me an income, I have now refused to pay for something I dont get, as I dont get Service any feed back I just get an email with statements. Which shows MTN does not care about me as a consumer but only see me as a ***gy bank that must pay for services I do not receive. This is without a doubt a violation of the concumer protection act.