Samsung S6 giving problems

<p>I am not happy at all I bought two contract phones Samsung phones S6 one phone has been giving problems from day one and have taken it to vodacare three times when they fixed one somethings else happens am going to vodacare in sandton today again as the phone keeps switching itself on and off and now it is completely off I cannot do anything with it am very disappointed that am paying for something I cannot use.</p>