LIES AND ***** IN CANCELLING MY WARRANTY AND LYING

I reported this matter to Vodacom that my phone stopped charging and I was overheating and when I have a full battery and take out a pic the phone would die and reboot. the phone went in to jhb for service and was return saying beyond economic repair that's all??? I logged a complaint and Divon only came back to me today and said MY TRACK WAS DAMAGE SO THEY CANCEL THE WARRANTY, YET MY PHONE IS NOT CHARGING SO THE CHARGING PIN IS THE ISSUE AND BESIDE THIS HE CONFIRMED THEY WERE calling back this phone manufacture default with charging pins, now instead of changing the phone or refurbish they cancel my warranty and return my phone _ unfixed and no updated software and unsuable and ******* for the warranty to be cancelled when manufacture call back on fault also the manager and supervisor doesn't return my call despite my message for it and I had to call like 2 times asking for when she will speak to me about their misconception and false cancellation of my warranty yet im still under contract n im still under warranty and its a manufacturing default they blaming me for a track default then why don't u charge my phone cause pins don't work manufacturing default not track ***3