Good evening , i sell 1 month ago a phone i sell it for part because it was blocked and about a couple of day later the seller request a return , he said that the phone was blocked mdm and the camera was blurry so he send back the phone very well packed and when i tested it it was fine the camera work perfectly and he is not blocked anymore but the phone was cracked in the back . so my questions is how i am suppose to refund him ok the phone is not blocked but he got crak