VODACOM REPAIRS USELESS AND TERRIBLE SERVICE!

I ordered a Blacberry Z30 directly from Vodacom and received it end of Jan / beginning Feb.Of course it was the easiest thing ever,the phone was delivered via Courier and everything.About 3 weeks or so after receiving the phone,I would be busy doing something,facebook,bbm whatever,then the screen would go black,and then go on and off, on and off.So here I am now after a month without a phone,having handed it in for the FOURTH TIME now for the same problem.Vodacom has \replaced"my phone but actually all they did was refurbish my phone and it is still doing the same thing. After giving them a video clip of what the phone does"