Bad Service

I have three (3) Mtn cellphone accounts on Top Up for R69.00 (the lod rate) as well as an old contract that will expire in the following months. In June 2015 I received a bill for more that R1 300.00 instead of my regular bill of R255.00. I made enquiries at the MTN in Nigel as their call centre number was just ringing. They could not help, they could only confirm that the limit on all my contracts were still R10.00. They informed me that they would forward my enquiry and would come back to me. To date no feedback. In July 2015 I received a bill for R3 244.81 for one of the cell phone numbers. On 19 July 2015, I called the MTN call centre and spoke to SHANICE RAYNERS and explained everything to her. I also informed her that I did not request any limit increase and that they should invesitgate what happened and provide me with evidence that I requested the increase. She requested that I email my contracts to her at [Email Removed] I emailed all the documents on 20 July 2015. I received a read receipt. I forwarded a follow up emial, however, to date I have not recived any response or acknowledgement that they are attending to my request for an investigation.