STOP *****ING MY MONEY

I upgraded in April 2015 and ever since MTN is *****ing my money.<br> <br> My contract should be R550.00 and I have added insurance. I do not pay anything less than R1000.00.<br> <br> Someone called me on the 08/07/2015 and was promised that I would be refunded for the incorrect billing and that my account will be corrected reference number ***. I received a new invoice for R1001.83 which means I am still being over charged.<br> <br> I am sick of this **** honestly I cannot deal I want to cancel this contract. You are the worst service provider I will never do business with you again. I hate MTN !!!<br> <br> All I get is someone replying on hello peter and no help