Poor Custoner Service from MTN Direct.

I have been trying g to upgrade my MTN contract for 6 weeks now. I eventually got through to a Themba Ncube who initiated a contract. Unfortunately he got my requirements all mixed up and tried sending me a sim card which I did not require. Over and above this, he got my address wrong and sent it to Cape Town. I live in Durban. Another consultant from Retentions dept tried to assist me but was unable to as I had an approved contract in the system awaiting activation. She wrote to Themba asking him rectify the situation. She copied his manager, Sunil Beharie. I subsequently wrote directly to Themba, copying Sunil to check what was happening. I got no response. I sent an email again to Themba and Sunil requesting at least a response. To date I have not heard from them nor anyone else from MTN.