6 months and still waiting

In August 2015, within 7 days of signing a new contract, I started experiencing problems with your network and was met with a down system. Most of our subsequent calls were not logged, and eventually after 4 months, breach of contract was confirmed and I initiated cancellation. After being told I must first test the phone I returned to our lawyer. Due to the original breach of contract, the phone does not need to be tested and MTN are obligated to cancel the contract with no cost. That was 21 January and no agent has called me back. In addition to cancelling, I want a refund from August to February for loss of income and handset value. Worst provider in SA by far!