terrible service

MTN owes me an amount of R1738 .I've been trying over a month (10th March2015-to current ) and have made no progress at all .I've been passed on from one consultant to another and when i finally get through they tell me that they going to call me back with a status report but didnt receive any calls from them . This is the worst service I've ever experienced with a network and would'nt advise any one to use them either.