MTN ********** and poor service

********** acc opened with my name , I reported the matter to mtn and submitted all required documents that is certified ID and affidavit from SAPS . I'm disappointed that I haven't heard anything from MTN , I call them frequently on a daily base but no one is helping , they can't even put me through to anyone in the ********** department. What kind of service is this ? I was in a process of buying a house , but because of this ********** acc with MTN which is behind on payment I can't, it has affected my ITC badly , transunion is requesting that MTN provides with a letter that clears my name but MTN is delaying this and not willing to help me it seems