Going to lose it....

<p>Got a new Samsung S6 Edge in September 2015. In December it just stopped working. Phone keeps going off. Took it to TT3 Repairs in Newton Park, Port Elizabeth and waited forever to get it back. Eventually received it back and low and behold the phone is still exactly the same. So phone goes back again. Wait forever again. Got it back last week, switched it on expecting it to work. Still exactly the same. Phone doesn't stay on. When I want to use the phone it is off. Stays on for a short while and goes off whenever it feels like it. Sometimes while it's still starting up and other times after 5 or 10 min. What is the use of the phone????</p>