faulty device

So Melissa Warrens has contacted me, still not resolving my problem. My SONY Z2 Xperia was faulty, when sent for repairs it was found that my LCD was cracked and water damaged. This phone is water proof and has never fallen. I also only had it for 5months. When I initially sent it away FNB dot where my contract is held said it couldneed a software upgrade. There was nothing wrong with my screen and the phone could go on. I just needed to send it away so that I don't breach my contract. I strongly believe that this device is faulty. The phone has been gone now for a month. I refuse to pay a cent to have the phone fixed. So I requested to have my phone sent back to me.