Deep freezer with factory defects

I bought a Defy Deep freezer from Makro. When I plugged it on it was not cooling. I then got someone to check what was wrong thinking it might have been the gas, but he advised that the fridge had factory defects and he didn’t want to fix since it was still under warranty. I then phoned the customer care line(Defy) and Technicians were sent out to check what was the issue. Technicians came and left without doing anything because they said the fridge had been tempered with, which was not true. I tried to get the Technicians to come and assist out off warranty and I was even willing to pay but they never came! They were supposed to come on the 13.02.2022 or 14.02.2023. I called again today on the 16.02.2022 and still was not given an answer as to when to expect them. My business is failing due to this. I really trusted Defy but after all this I am uncertain about that.