When Samsung Z Fold 7 came out im the first client to get it at Secunda Vodacom4u, since it's inception the phone self breaks, the first time I took it in and was repaired under warranty

When Samsung Z Fold 7 came out im the first client to get it at Secunda Vodacom4u, since it's inception the phone self breaks, the first time I took it in and was repaired under warranty. The big screen cracked they fixed it, again last week the screen is showing a line. I reported the issue where I got the phone, till now no response. My request from Samsung it that it's clear that I got the phone which didn't pass the quality assurance it deserved hence I bought a problem. More importantly I bought the phone as a business owner for convenience but the phone is now the source of unhappiness in my professional life. I always carry two phones always the second one being Samsung s22 ultra 5 G also broken now with insurance but im told I need to pay so much money for the new model because they don't have S 22 Samsung ultra 5 G. I'm currently preparing for lawsuits hence I can't wait more than an hour without my phone. So please give me the newest phone which has gone through quality assurance