Tired of waiting 30 mins for assistance.

I have 3 lines with MTN, Since signing the third line in December i have not been getting my allocated sms/data and airtime for the package. I have to call at the beginning of every month to get the call center to log a query to allocate the minutes. The average hold time is no less than 30 minutes and often times after 15 minutes of waiting my call is dropped and the process starts again.<br> The call center assusres me that the matter is being addressed and the following day i usually get my airtime. However come the 2nd of the following month there are no minutes allocated.<br> 6 months on this process is proving extremely tedious.<br> The second complaint i have relates to change of banking details. I have visted stores and contacted the call center to change the details. I have submitted written requests as well as verbal requests to no avail. Every other provider that debits my accounts was able to change details without problems.<br> The staff are always friendly but unfortunately prove totally clueless or useless.<br> I would terminate my contracts were i not bound to them, but im not totally conviced that they would manage to do this either.