No compassion ,No Customer service.I CANT!!!!!

I purchased a Sinotech tablet as I am waiting for the insurance to replace my devices ******.I use the tablet as a phone as I have no other form of communication.<br> The tablets battery life is very poor doesn't last 3 hours without using it. I took it back (within 6 days) and to my surprise the shop was closed.<br> I got in my car where my key broke in the ignition and I had to wait for a tow truck etc. by the time I was helped it was 7.30 pm which all the games in my area was closed. <br> Today 18.08.2015 I went to the game Tygervalley on the 7th day and explained the situation and they advised they can credit me and then I can repurchase the device .<br> I asked to they have in stock, and they advised me no. I asked can he check other stores and he checked on the system and said all branches is in negative figures, I told him that game zevenwact had 20 when I purchased mine and he phone and they said no stock.<br> I explained that I cannot be without a device and said if they can note I was there within the 7 days and phone me when the stock arrived I will come fetch the new one and return this one he said no.I asked for a loan device he said i cant get one.Why must i sit with a faulty device?