To be fair, I work in a decent size Napa and even if management doesn't erroneously post parts into inventory when they haven't shown up, parts will go mia. At least at our store drivers will stock parts, and the places some chit will end up is insane. I'm the findit guy because I know all the "wrong" places to look. Hell, I won't even ask some of my coworkers to do stuff on my days off, it's easier and less annoying for me to drive into town and do it myself than it is to try to walk somebody through stuff over the phone.
Autozone is complete anarchy last I heard, no manager, no assistant manager, a customer told us two employees were shouting at each other and when he asked a 3rd if they had a volt meter "Yeah, but I'm not gonna get it for you".