Poor service

Hi there,<br> <br> Am a cutomer of MTN for the past 4 years, Booked in my galaxy tab for repairs on the 31 of Jan 2015.i was provided with a call centre number, which am not sure whether actually exist or are they really trying to pretend busy.I lost near about 120 rands trying to get hold of them .In the text sms they sent me they gave me a quotation for near about 850 rands. by gods grace i got hold of them once and on call they said the quotation is 458.07 rands. I even accepted the quotation on call , was expecting the unit back by last weekend later again after i had the call with the executive i got an sms saying my unit has been quoted for 850Rand again. since the day i got the sms am trying to get hold of them but no one is answering from their side.when i went to the place were i booked in my unit ,they have no answers for me . Am really desperate with the poor service that am provided with. In future i wont even go for MTN and suggest any one to take MTN contracts. <br> <br>