Poor Customer service by Game and Hisense

I purchased a fridge/freezer from Game Cresta in November 2019. In January 2021 the fridge/freezer was not cooling. I reported the matter to Game Cresta on the 26th of January 2021 as it is still under warranty. After numerous follow ups with Game Cresta, I was informed on the 9th of February 2021 that a technician from Hisense will contact me. I then received a message on the 11th February 2021 (Reference ***) that a technician will contact me. The technician arrived on the 13th of February 2021 and did a few checks and switched the fridge on and said everything should be fine. The job card was then closed. However, a week later the fridge/freezer was not cooling again. I then called Hisense again and was informed a different technician will be assigned (Reference ***) on the 25th February 2021. The technician arrived and indicated the fridge required gas which was then inserted accordingly. I found it quite strange that a new fridge will require gas. He then requested I contact him if the fridge does not cool or freeze within 3 days. On Monday, the 1st of March 2021 the fridge was not cooling and I called the technician directly to inform him of the fridge. He then indicated to me he will write a detailed report to Hisense. When I asked when feedback will be provided, he said he cannot provide a timeframe. On the 8th of March 2021 the matter was once again reported to Hisense (Reference ***). The technician that had come out the first time had been assigned again to the job. He removed all the gas and refilled gas to the fridge/freezer. He indicated that everything should be fine. On the 9th March 2021 the job was categorised as complete without following up if all is in order. I then contacted the technician and he said he will call me within 10 min and never did. On the 11th of March 2021 I contacted Hisense and was provided a reference number 817762 and told that the credit department will call me. To date there has been no progress and no feedback on the matter. This process is really frustrating and causing a huge inconvenience without an operational fridge/freezer for the last two months. The service I have received from both Game Cresta and Hisense has been unprofessional, the mere fact that I have to follow up every single time shows how much they value their customers. This is no way to conduct business and treat a paying customer. I am highly disappointed and hope to be assisted accordingly to resolve the matter.