Samsung customer service is so bad

Hello Peter. I bought a phone on the 23rd November at American Swiss Randfontein. A Samsung A22 5G, beginning of January it started giving me problems, it didn't want to charge so I took it back to American Swiss and it was booked for repairs at 3Gservices@3G mobile. Then on the 28th February it came back from repairs. On the 02 on March when I received from the store, started giving me another problem, this time it cuts off my calls. Whenever I receive a call I speak only for a minute then it cuts me off. I now ran out of options I don't know what to do. Please advise on what to do moving forward.