Worst Service Ever

I walked into Cell C's walk-in Center in Woodmead this afternoon the 12/08/15 to hand in my 6 month old Blackberry Z3 which automatically decided to switch off without any warning as i was charging.I released while trying to swithch it on after 3 hours of charging and it wasn't turning on that it was heating up drastically and then i removed it form the charger.I still tried to charge again 2 hours after the first attempt and still no prevail.So as i handed my phone in to the consultant and advised on the urgency of receiving it back on the same day she then took it to the technician and returned after an hour of waiting. She came with a job card and another slip which said damaged phone and repairable because of corrosion which may be due to me holding it with sweaty palms say the Supervisor i asked for who is an Indian gentleman. I then advised how this was to be resolved and he said that they cannot replace this as my warranty doesn't cover a corroded phone. this is a contract phone and i for some reason cannot get a replacement ever though i am paying monthly. Total ********. I want a new device to use tomorrow or else this will not end well.