Sub-standard Hisense refrigirator bought from HiFi corporation

I made a Hisene refrigirator purchase in May 2023 which was delivered sometime in June after back and forth delivery delays. I November I went to the Cresta store where it was purchased and reported that the freezer part was over freezing and when I reducing the temperature makes the fridge part warm and the contents go off. Also the side of the fridge part is extremely hot as thou one is walking passed a stove. They sent a technician who told me he regassed and should be fine, still shocked that a supposedly brand new refrigirator is already being regassed, about 2 weeks later I started seeing water on the floor by the fridge and went back to the store and reported the leak. they promised to report it again to Hisense, I have called the shop and their head office, went to the store a few times and still no joy, meanwhile the stream of water from the leak is putting my family at risk of slipping. On Friday 16th February I called a lady that they referred me to at the store to ask for a refund so that I can replace it and she told me Hisense has already refunded the store and that I would need to go back to the store for my refund. when I got to the store on the 18th the gentleman I spoke to told me that he doesn't have the mandate to process refunds and would escalate the query with the store manager the next day and he would call me back to make the said arrangement but to date I have not heard from Hi Fi Corporation and their phones just ring with no response. I'm so frustrated because my perishable groceries gets thrown out daily as the fridge is not cold enough and I just want Hi Fi Corporataion to come and collect their refrigirator and refund me to go and make a purchase from a store that provides after sales support to customers.