VodacomSamsung Repair

On the 29th April15 I raised a Hello Peter complaint. Vodacom phoned same day to acknowledge the complaint and said they will phone me back...still waiting.... On the 30th April Vodacom Advance repair center did replace my phone with new one (Thank You) but unfortunately the phone is still doing the same as the original phone. It hangs allot, Looses Network connection and the only way to resolve is to restart the phone.... Doing it 8 - 10 times a day. I have phone advance repair center awaiting them to phone me back I also phoned Samsung to lodge a complaint (Ref ***) and was advice to factory reset my phone and if not fixed to book in again. This is unacceptable as Im without a working phone for almost 2 months and is paying for the device. I do request that Vodacom steps in again and resolve the issue as will not be without a phone if I have to send it in for repairs.