Pathetic service rendered and incapable of solving enquiries caused by themselves

I have been waiting for feedback on a missing payment that was deducted from me but does not reflect on their side and now my account is in arears cause of their stupid mistake. The service I have been receiving from their call center agents is like they were never trained on anything. I submited the statement as proof that my debit order was taken off in September two weeks ago and i was told it will take 24/48 hours to be allocated. I then called three days later and was told that it is still with in SLA due to the weekend. I then called yesterday and i was told that it takes up to 21 working days. I mean none of them seem to know their job and it degrades the company as a whole I am still awaiting feedback on my enquiry and it seems like they dont care, I will never do business with MTN again after my current contracts expire this is pathetic