Samsung Z Flip 5 Bad Service

I purchased a Samsung Z Flip 5 from the official Samsung store, Daidalos branch, inside Denizli Forum Camlık Mall on 10/08/2023. On 28/09/2023, I requested to send it for service due to a hinge issue at the same branch. When you opened the device, it should have a 90-degree angle, but it was leaning at about 75 degrees and wobbling from the right hinge side. The staff opened my case and helped, but having had a bad experience with Samsung's after-sales service in Turkey in the past, I took cosmetic photos of the device from the staff's phone during the handover. Fortunately, I did because on May 10, 2023, the authorized branch called and said, "You can pick up your device." So I went to pick it up, and it was the same old bitter experience. They had fixed the hinge problem, but the overall feel of the device opening and closing had changed drastically (I tested a display model). I said to myself, "Well, this can happen since the screen and battery have been replaced." Later, I noticed that the back of the ceramic device was covered in significant and visible scratches that could only have been caused by a key or a sharp object. I've attached some images for your convenience. But that's not all; the front panel screen (small screen) has a distinct 4 cm horizontal yellow line. It's a pixel flaw. How can you send it back while claiming that there was no problem after running all of the tests, including the picture evidence I provided? How is it possible that a globally recognized brand is so poorly represented in our country? We've been hoping that if we buy a Samsung device in Turkey, we'll be able to use it for at least 2-3 years without any problems because the after-sales support, or lack thereof, has been a total letdown. If I had sent this device with such severe scratches, the service would have contacted me within two days, claiming physical damage and the need for a paid repair. What am I supposed to ask for now that you've made the phone worse? How much time have I squandered? What about the money I've lost? My anxiety and frustration? I demand a written apology as well as the same brand-new, unopened device, or I will take legal action.