Billing issue and delayed resolution

After receiving an exceptionally high bill for the July-August billing period, I investigated and found that I was being charged for Packet Switched Data Calls. I phoned the MTN Accounts call centre on 21 August 2015 and found out that these are out of bundle Data rates. As I have wifi at both work and home and had at least 50 mb data left on my data bundle, I disputed this and logged a call to have the account corrected.<br> I again followed up on 31 August 2015 and still had no resolution, thus at the start of September the full billed amount was deducted. I followed up again on 9 September 2015 and there is still no response. The only response I received was from customer care explaining what the charges are, which I myself stated I understood in my email to them.<br> This is my second issue with MTN billing in a year. I cannot wait for the contract period to be over so that I can move on to the next horrible service provider.<br>