Hisense Customer Care very careless , no service at all!!!!

I am really not happy with Hisense, I bought a double door fridge from them on the 21st November 2021. I come back from work on the 15th April 2021, I discover the fridge is not cooling. I log a call with them in the morning of the 16th April as the fridge is still under warranty. I am first promised that my claim will be logged as an emergency call, I should wait someone will come through before the end of day. I call again around 15:00 pm to find out if a technician is on the way. I am told the technician can only come next week Tuesday. What do I do in that situation? Do I go and buy another fridge while I wait for them to send a technician???? I am really frustrated, close to R 3,500 worth of my groceries in the fridge will go stale. I'm really frustrated.