Marko Polokwane poor customer service

I bought a 2 double door fridge with Ice and water dispenser last year June. To this day the things haa6 never worked. I logged a call for them to come fix it. They came 3 times and did nothing. I've asked them for a replacement or refund, they sending me from pillar to post with the supplier (HISESNSE) claiming all sorts of false stories. I bought the fridge cash and paid for extended warranty. All they do is ask me same questions everytime I call. They don't know how to value customers. They saying the supplier is refusing to replace the fridge and i have told them that i don't have a relationship with HISENSE hence I didn't buy the fridge directly to them. How do i get the fridge replaced or a refund. I'm now getting frustrated and beyond angry.