The Most unhappiest client

Good day

In April 2018, my Contract Tablet I have with Cell C almost blew up in my face while I was asleep and it wasnt even on charge. I took it to Cell C, Vangate Mall the following day and they said they will have to send it away for repairs, of which I knew it was impossible to fix it, because the battery is a build in one, and that was the cause of the Tablet that blew up. A week later someone from Cell C contacted me and said that they are unable to fix it and that I need to pay over a Thousand Rand for a new Tablet, because as per the Technician it was a human error that caused the battery blow up, of which they actually accussing me of tampering with the phone. Now how I could got that right during the night while asleep, I have no idea. I refused to pay, because I told them that it is a contract phone, and by Law it still belongs to Cell C and not me. The only thing they could say, is that they will send it off for repairs again, because they could unfortunately not assist me any further. And I received another call from them a few days later, saying the offering me another Tablet, but still insisted that I should pay for it and I refused. Up until today, Im still paying for my contract without a device and I have been using the simcard, of which I had to use in another device, because of Cell C's negligence on assisting me. I am seriously a very unhappy client, and do not feel like going on with another contract with Cell C, until this matter is resolved. I really received the worst service from the staff at Vangate Mall, that is still sitting with the device from April and never got back to me yet. And to top it all off, my contract simcard even stopped working about a month and a half ago as well, but I still need to pay for a device I dont have and simcard thats also not working anymore. If someone at Head Office could please assist here, because I refuse to deal with Vangate Mall staff, or I will have to take this matter to the Media.