Very neat game! The concept is very fitting for the apocalypse theme, and brought back bad Customer Service Employee memories! It's incredibly good and smart, you made the different managements very fun.
I won't nitpick at the art direction, it works fine with how little time we had. In fact, making everything readable made it it work incredibly well.
Sometimes I did feel like the customers asking for multiple of the same item in a line did mess me up, and I swear at times I would give them the exact amount only for the first item to go to +1 instead. And the fridge auto-closes a bit too fast, it made getting +13 of something hard.
Though, that's not too heavily something I would change, it works fine!
With how much tensity and stress doing each day made me feel, espcially in the endless mode, I could definitely see this work in a horror theme as well. I think this concept is very well made.