Samsung store

I've been having endless problems with my A53 5G Samsung cell phone which I purchased in Cape Town 8th April 2022. I'm located in Potchestroom and have sent in the phone for repairs four times already. I have been called by Samsung agents from customer care and to this day nothing has been resolved. I've then couriered my phone to Samsung store in the Waterfront in Cape Town almost three weeks ago. I'm paying every month for handset that is more in for repairs than me having to use it. I still haven't had any call or a decision made by anyone to replace the handset with another phone. So I need some sort of advice as to what to do to get this matter resolved. I'm deeply disappointed in the service received from Samsung.