Return policy that socks when you paid in full for your goods

3 months ago today I bought a TV. 49" Hisence. Today the TV can not stay on for more 10mins and I have paid full for this TV now that I go and complain about what is happening I am told to leave it and the will assess it which will take 14 days. So in other word I have to stay 14days without a TV when I am also paying DSTV that I'm hardly watching coz of this TV. I then called Hisence hoping they can just exchange or give me a loan TV while I wait for them but no one wants to help me. I paid for nothing. The day I went to game a lady was refunding a TV and she was helped so well. The manager who help me was Themba from the Bellair store. I want my money back and go buy my TV else where as this service is not well. I'm missing my shows and sports while I have paid and paying my DSTV as well.