Poor service

I bought a 65 inch TV that stopped working within 5 months, I opted for the tv to be replaced but was told by Hisense through Pick n Pay Greenstone they will not credit me as the model is old, 05 November I received a message confirming appointment and to expect a call for repair reference *** but I'm still waiting to date, FYI I've been stuck with a non working tv for a month. I'm tired of the back and forth and honestly should have read the reviews prior before making a Hisense purchase