Vodacom 4U nelspruit

i upgrade my contract with vodocom on the 29 Jan. i ask the consulted that is the best phone for everyday use because if you take to repair a screen it is very expense. so he recommend to go with the CAT S31 smartphone. the first days it was i do not understand the phone. on the 10 day i went back to vodacom and they want to sent is in for repairs. A new phone must go in to repair. we spoke to CAT and they said there is a 28 week return in CAT S31. I can not sent in my phone because we just it for business, we lost big on business because the phone is faulty. so I want to know who will pay my lost in income because the phone does not ring and do not charge and how is you going to assist me with my problem????dealer name Vodacom 4U nelspruit