DATA Dispute

Contract for 1 GIG was sufficient for the duration of the contract, had 2 very large bills debited off my account, upon investigation apparently I was supposed to know to upgrade my contract. Upgraded in October 2014 and to date my 2 GIG contract for R99 PM was sufficient.In August my Ipad had no internet, call centre says its because my usage is on R800 odd and all other bills are paid up so she didn not know why I was cut off so she unblocked me. I did not use the ipad as I wanted to investigate the large bill (which I was under the impression at the time of taking the contract that I had a cap at 2 Gigs). The investigation has taken over 3 weeks (debited my account in the meantime)and I now received the URL&ITB from customer care but when calling 083 1 808for help and holding for 14 mins she then tells me to call 083 155 with no answer. The detaisl the have sent show data running on days that the ipad is totally switched off as I didn't want to use the Ipad until I found out why the bill was so high. Hillcrest MTN Branch was also dealing with MTN call centre to assist in the situation and the fact that the branches have such limited access is crazy. I WANT MY ACCOUNT CORRECTED