Display Problem - Nothing phone 2a plus

I purchased nothing phone 2a plus 5 months ago and faced display problem constantly. Infact, I visited service centre and they didn't take any action. They told that this is the behaviour of amoled display. Please help me to provide a solution for this.

I purchased nothing phone 2a plus 5 months ago and faced display problem constantly. Infact, I visited service centre and they didn't take any action. They told that this is the behaviour of amoled display. Please help me to provide a solution for this.