Eccessive Bill R150 000

I've been with MTN ever since mobile phones became a necessity and never had any problems with my account. However last month I recieved my bill and realized that it was a little much (R1100 and my phone was suspended) My ave account is R450. I went into the Autopage store to have it checked and to my shock there was an unbilled account waiting of R150 000!<br> The staff in the store was just as shocked and the lady offered to help me and logged a querie with some urgency on it with HEAD QUARTERS. Its now the second week that my phone is off and in quite a bind as nobody can reach me and I cant reach anybody, very annoying. My complaint is not about the lady in the store as I cant expect her to fight my battles during office hrs. I also tried to call HEAD QUARTERS but my phone is suspended.<br> This account is outrageous as no one can in their life use that much data or calls in any billed period of time. The funny thing is also that this amount is next month's bill that I haven't even used yet! How is that possible?<br> I really would like this resolved as I need my phone!!!<br>