Fixitt Appliance repairs lack of service delivery and very poor communication

With load shedding in January my fridge's LED screen became faulty and I contacted Fixitt who send technicians to repair. They were of opinion that it was the pc board that was faulty. After paying them they replaced the board a few days later which only resulted in my compressor not working after a power failure and all my food defrosting late on Friday the 19th of Feb. My son in law (electrical technician) put the old PC board back and the fridge immediately started working again. He also noticed that it was a totally different and smaller pc board. I wrote an email to Fixitt on Saturday the 20th of Feb and explained all of this. My question were why replace a pc board if the fridge was still working and the LED display was the problem. They sent the same technicians back on Monday the 22nd of Feb who was of opinion the new pc board was faulty and said that they will contact me the same afternoon. Up until today 09 March I have not yet had a call from Fixitt. I phoned them yesterday asking what is happening and they said that they will send new Technicians out today. I am still waiting. I have been very patient and gracious up to this point, but the service is very disappointing and I would prefer I refund so that I can find someone who will be able to help and deliver good service.