Huawei Watch Fit 2 Display Issue: Outrageous Repair Quote for Warranty-Claimed Defect

An alarming issue has arisen with my Huawei Watch Fit 2: there are now thin lines of yellow color running along the screen's borders. I was told that the repair would cost a staggering 7427 TL, despite the fact that I was still well within the warranty period, and the reason given was that it was a user-induced error. The watch was built to withstand water, and it has not been dropped or otherwise mistreated in any way. I categorically refute the idea that there was an error on the part of the user and insist that the appropriate measures be taken to fix this problem.