i don't think he cares his job..
if i were u, i will complain him for sure..complain to shop manager la..if you don't want to waste time to write letter to complain to the office..
https://i.ksd-i.com/s/630x_86400_d73df9dd036307410a503045cbbfae07/static.koreastardaily.com/profile/23243/138969.jpg