You repairs need repais

<p>In December I handed in my Iphone fo a new screen, not only did I have to wait two weeks but now the screen has brown lines running across and water lines running down, the lighting is very dark, it is unclear, the touch screen is not responding properly and the handset gets extremly hot. It ny had a cracked screen and none of these issues before this. How do I now actually have this poblem resolved if Vodacom actually caused it.</p>