CONTINUOUS REPAIRS AND NOT WILLING TO REPLACE

Hi my number is *** with IMEI-***. I have send my phone 2 times to Vodacom repairs Bethlehem under warranty and now will be the 3rd time. Everytime the phone get send back as being repaired according to their knowledge after 2 weeks same old story arrive. Financially it cost me R 600.00 to keep taking this phone to them since in Ficksburg we don't have any Vodacom store so Bethlehem is the closest. My wife and I have 7 contracts from Vodacom which I am paying every month so if you cannot be of my assistance you leave me no option but to stop payment immediately on all contracts. I spoke to the manager at the repair centre in Bethlehem all she could say is I must bring the phone them, on whos expense? I then spoke to head office repair center and also said it will take 14 days before feedback. While my phone is there I cannot do any of my orders for my business and then I must use 200 airtime to place my orders per week. So at the moment Im the one on the losing side and Vodacom is my time consumer. Now I must send it again forrepairs.Why dont they just replace the phone.