Shocking customer service from MTN

MTN's customer service is absolutely horrific!<br> <br> I have a number of issues I have been trying to get resolved and months later, after numerous phone calls, emails, sms's and tweets, nothing has happened.<br> <br> I received a very high bill at the beginning of the year which I queried and was given a reference number for. All I have been told is that the exorbitant charges where for \out of bundle data"but despite numerous requests for more information I have not received anything.<br> <br> I have also had the setting where"