iPhone 12 Green tint

Has anyone gone around to fix the green tint? The so-called Apple authorized serviced providers in Bangladesh have refused to even look at it as it was an iPhone that wasn't sold 'officially' in Bangladesh. Btw, I purchased this iPhone from UAE when I travelled back to Bangladesh.

No amount of software updates and iTunes restores have fixed this issue. Even iOS 15 fails to fix this! Apple still does not acknowledge the hardware defect.

Has anyone actually been able to fix this? I'm stuck in Bangladesh now and will be able to get back to UAE, but my iPhone warranty will be expired by then. Don't want to be charged for Apple's poor quality control.