Very Very Poor Service

MTN has deducted more than R3000.00 extra off my account the last two months. It was reported to MTN Menlyn to Gabriel Mabena on 15 June 2015 (***). Then again to Reabetsoe Busang at MTN Brooklyn on 3 July 2015 (***). Per internet as well (*** and ***). Don't even bother to try and phone MTN. NO ONE ANSWERS!!! It seems no one has e-mail because NO ONE ANSWERS!! I must say they are very prompt taking my money. Never late with that but feedback well it seems a month of two without feedback is not there problem. Do not try to speak to a manger at the MTN offices. No of them has the authority to resolve the issue. Who does?? I had to suspend the line until I can resolve it. Thus I am paying for a service that I am not getting. That is sad!!