Samsung using excuses not to repair Z3 Flip phone

I escalated this matter in August 2022 through MTN were I have a contract and sadly to say it has not been resolved. The technician who assessed my phone is saying the black line in the middle of my Z fold 3 is because my phone fell. If this is the case, why are the screen not scratched or cracked? The phone had a screen protector as well as a protector for the back. Why is the outside screen still working? Why is it just the fold that has a black stripe? Why are there so many reviews of people complaining about the exact same issue - their Z fold has a black stripe through the middle and Samsung is saying it is not a factory fault hence the phone is no longer under warrantee! My phone is 8 months old!! For a lot of years, I have been using Samsung phones and I have never even booked in a phone to be repaired under warrantee.

This is totally unacceptable, and it seems like a lame excuse not to repair the phone under warrantee!