Overcharged and MTN couldnt be bothered to sort

I contacted MTN on the 07th July about an overcharge on my account and they still havent bothered to get back to me. I see I have been overcharged again and my billing is a complete and utter disaster - there is no way one can make any sense of the overcharges you have placed on my account. Random figures that are inflated beyond belief. And I know that I am not the only person who is having this issue. I will be stopping my debit order until you people sort yourselves out and I will also be moving to Cell C. I do not give even half a rats **** as to your labour issues - I am a customer and with the cost of my contract, I most certainly deserve even some semblance of a service. MTN is singularly the worst brand in Africa - THE WORST! I think even Eskom and Telkom will have a hard time living up to your established lows when it comes to customer service.