MTN, the network that robs you

So MTN always find ways to take your money and when you query on it they always have excuses and no help at all. So these past 4 month MTN overcharged me on a contract and when I called the call center they just want to transfer you as nobody knows what they do @ the call center. They send sms to your mobile number that say that you will be charged out of bundle rate but my limits is set @ R0.00 and I also top up my account. I would cancel all my contract as soon as it ends and find another network with better service as MTN does not even reply to Hello Peter as I did write a review a week back and still no response. They should also spend there money on there support and not just on there sales department. As they give good service on there sales department but after that it goes from bad to worst.