S21 issue. 8 Samsung products at home but this will be my last.

I bought a s21 end of last year. This will be the last time. I have 8 Samsung products at home and I think I have been loyal to a company that is not loyal to its customers.

This was th problem with my phone. It kept rebooting sometimes 20 times a day. I took it into the Samsung Store in Eastgate for repair. They kept it for a week and told me there was nothing wrong with it. I took it back the following because of the same problem. I was told that I have too many apps running. I asked them to check it again. When they tried to do diagnostics it showed an error. They called me the next day and said they have to replace the motherboard but they can only order the part in 6 days because its their month end. THey told me it would be ready today or tomorrow. I called today and they have not even received the parts yet. This is unacceptable.