Images Appear on LG 43uj630v Smart LED TV All Distorted

I own LG 43uj630v brand Smart LED TV. I bought the product from Teknosa in 2018. While watching a movie yesterday, the image was distorted at the same time. Today I took it to Tekirdağ Çorlu authorized service. They told me that the panel was broken and it was not possible to repair it and that the screen was replaced and the price was 8000 TL. I chose LG because it is a company that produces panels for many brands. It is very abnormal to have such a problem before the end of 5 years. This is unacceptable. It didn't suit the brand. I have a Philips LED TV and it has been in good condition for 10 years. A malfunction that occurs very rarely in such a short time can only be a manufacturing defect. (Words of a 70-year-old TV repairman) I am complaining. I want my grievance to be remedied.