phone repairs never done properly

so i picked up my phone from repairs, from vodacom world today. It was sent in for, lack of battery power, overheating, blanking of screen, etc. According to vodacom, they didn't find any fault with the phone, but when i picked it up, its doing the same thing. absolutely frustrating. i stay quite far from vodacom world and i cannot keep on going back for a recurring problem. i mean i just picked up my phone today, and its still doing the same thing, it was when i sent it in the first place. <br> <br> this is not the first time i am having a problem with vodacoms repair service. i wouldn't have to need to take my phone back every time, it takes too much time, and its causing a major inconvenience.<br>