bad service

on the 25 May 2015 I went to MTN in Hemingways Mall for an upgrade, the consultant that helped me was Sinalo, she said she was unable to do the upgrade without my payslip went back the next day gave the payslip as requested and was told by Sinalo that I must come back the following day as the system is slow and that she will call me however she didn't call me I called her and she told me she's waiting for her manager from Durban to come and process it, I went back to MTN on Saturday and she said she has to re do everything and submit everything again waited for over 30 minutes only to be told that I must come back and that I will receive a call. its being over a week and I had no response from MTN this is poor customer service and a big inconvenience. tried to call the area manger over 3 times and there was no answer. from management right down to the consultants have no ethics in how a customer showed be treated.