Fair Price Injustice

I bought TV from Fair Price Furniture and Appliances in Johannesburg in the 20th May 2020. I was told it has 2 years warranty. In June 2020, HDMI ports stopped working, I reported this. I was asked to bring it back to the store and that I did. It took almost whole month of July. Last week July 2020 I got it back and I discovered the ports don't work still. I contacted the store again and asked them new TV. They reported the matter to their bosses, which denied my plea. Added was that they will take the TV back to the repairs. Honestly, I can't allow to take TV which has been altered with twice, I take that as s****. Even if it requires me to top up for the new I was ready.