Iphone sent in for repairs on 24.8.15

I took my Iphone to MTN Westgate on the 24.8.15 to get repaired the phone reached the repair centre a week later. I contacted the repair centre by email only to be told they waiting for a R330.00 access fee.<br> I have paid the fee they tell me the phone is fixed but they doing stock taking and it will only be sent back to Westgate next week. When I called Westgate yesterday I was promised they would call back which never happened. I am going to cancel my contract with MTN. I am being charged for an Iphone 5S but I am using the Iphone 4 for a month. Does it take 4 weeks for a phone to get repaired or are they just useless. The customer care centre are the pits and never come back to a person. You just get these emails saying they got your complaint but nothing ever happens.