HEAVY DISAPPOINTED IN SAMSUNG S22 ULTRA AND IN SAMSUNG

Good day, I just want to let EVERYBODY know how DISAPPOINTED I am in Samsung.....DISAPPOINTING is a UNDERSTATEMENT!!! There's something wrong with my selfie camera, I took my phone ( SAMSUNG S22 ULTRA, TOP OF THE RANGE PHONE - suppose to be....) to our local MTN store, to send it to technicians to have a look at my phone. My phone is still under guarantee. It came back, still not fixed, technicians don't know whats wrong, MTN send it away AGAIN( 2nd time), it came back, STILL THE SAME PROBLEM. Samsung called me and said I must go back to MTN and asked them to follow a procedure, called CPA..... after I asked Samsung to replace my phone in connection with the problem, cause the technicians cant even fix it. I went to MTN this morning, and the lady at MTN told me she doesn't know such a procedure as CPA. Now i must send my phone back for the THIRD TIME!!!!! I am SÓ frustrated, and i dont think its fair to send it away again for the THIRD TIME, because I have to pay my contract, but I don't have a phone.....i dont think its fair.....after all I feel that Samsung could have replaced my phone after the 2nd time around.....if the technicians can't find the problem the 1st time , and again a 2nd time, what makes you think a THIRD TIME is going to be successful???!!! SAMSUNG, CAN YOU PLEASE REPLACE MY CURRENT PHONE WITH A NEW ONE? SAMSUNG S22 ULTRA