Hisense TV not repaired after almost 2 months

My Hisense tv has dark spots on the display, initially the TV was booked in on the 17th of July, Takealot send it to the supplier and for the 3rd time now hisense "rectron" sent it back and say they cant find fault with the TV, I drove to Takealot and show them the dark spot and they also said they can see it. My warranty is running out and Hisense is sending my TV back every time. I am very frustrated as no one is getting back to me and I am sitting without a TV.