Dude
There was no reason to act like that at all, and I know I'm not the GM - if I was the GM I'd not have bothered pointing it out and just told you to change it. Like the rest of us I do what ever Klippy says.
I don't know where you live or whatever, but here most stores have halls around or behind the area customers are allowed access to that lead to staff areas - like the inside part of a loading dock or a storage room. As for the keys in the ignition - there are plenty of stupid people and people who don't obey every rule on the planet.
I'm not telling you what to do with you character, you can have think whatever you want of anyone or do whatever you want but it doesn't make sense if your post changes the topography from mine. Just calm down, above all else this is for a bit of fun and it's going to be more enjoyable for people if everyone's posts make sense linked together.
I'd hope that if I did something that didn't make sense everyone would be quick to tell me too.