Sick of Faulty Phone

My Phone was send back for the 4th time for the same reasons. I did send him back last week at Rustenburg Repair shop but my Phone has been return as N.F.F today. When i booked in my Phone i show the woman who help me what the Phone does.. She saw it with her own eyes I have the phone for 1 hour and it makes the same like previously but Vodacom cant find the problem. ***?????Tomorrow i must go back with my Phone what has faulty for the 5 th time. Now i want a NEW phone and not a refurbish **** i want a brand New Phone because my phone is 7 Months old but has been repaired for the 5th time but i still have problems.BUT every time its a don't care attitude because Vodacom don't use the faulty Phone. Even if i put my Phone down little bit to hard it shows a Snowy screen and restart by it self and thats normal but S5 is shock proof!!! Is it normal for the screen to change to Yellow colour or restart by it self and screen are not working but the buttons lights are on.. Other wise Vodacom must maybe get more intelligent staff to repair the phones and dont even investigated the phone properly. And if i not getting a New Phone i will take it Further then HELLOPETER.. JOB NO: ***0..