MacBook Dent

Hi I took my MacBook Air for a battery replacement and I paid in cash for the service The seat I went to pick up my MacBook it had a GUSH Scar a big DENT on my MacBook that can cut a rope when I asked to be reimbursed for that I was taken from pillar to post until this day it’s been a year goo to two now , the store keep on changing managers evading the problem they caused