Amazon India — Reg. Not providing replacement of Phone

I (Sai Rao) brought a new Iphone 13 128GB Green from Amazon India on 08.08.2022 and received it on 09.08.2022 night and when i turned on the phone i found that there is a black spot on the screen i called amazon customer care and they denied to replace it they said its a brand item u need to get the service denial from apple and next morning i went apple customer center they said we can change the screen free of cost but we cant replace the phone we can give the report of the condition of phone which can be used to get replace from where u brought phone (in my case Amazon) i said ok and i sent that report to amazon but amazon denied it said sir we need a service denial letter otherwise we cant do it so, i went back to apple customer care center they said sir we ready to change the screen so how can we give u the service denial letter when i said this to amazon they said sorry sir we cant change it without. in all these only i m getting loss here i want to buy a new phone but i m getting a repaired phone for a price of new phone and amazon is denying of replace it even after their 7 days replacement policy.