Very Poor service from MTN - They have no clue what they do - Cannot assist with query

Our February debit did not go off, when queried why and after speaking to 2 different consultants, who gave different answers, the problem is still not resolved. According to the consultant they do not know, cannot see and cannot find out why the debit for February was not requested. According to the other consultant the December debit was returned and this 30 days after it was requested from the bank??????? We have the proof that the Dec and Jan debit orders went through on bank statements and no returned debit order penalties. This has definitely resulted in my decision to cancel with MTN as soon as this is resolved. This is also affecting my credit score negatively Willem ***