I wish to lodge a complaint with Esquire Technologies concerning the poor quality of service when handling products under warranty delivered

I wish to lodge a complaint with Esquire Technologies concerning the poor quality of service when handling products under warranty delivered.I bought a Tablet from Esquire that went faulty, (didn't want to switch on), Upon returning it to supplier because of warranty I was informed that they regret to inform me that due to physical damage to the device, your warranty is void and repairs cannot be done. They sent me a pic of a crack on the camera which was never there prior to handing it over to repairs dept.(it was a fresh crack). I asked for a repair order and am still waiting for one. I was told repairs gets done at their branch in JHB and will only get an answer in a weeks time, but some how the above message was sent to me the next day from Cape Town branch. I was looking forward in doing business with them as there prices are quite good. Now that i have experienced their after sales service i have changed my mind.