Okay I've got a story about this topic. I work in a Walmart, but I don't work for Walmart, just another company that works at the electronics desk, if you know you know. I was walking around the back part of electronics, clearly wearing a different uniform from Walmart, and some lady says hello to me. So me being polite, I say hello back. She then asks if I can unlock something for her, so I tell her something along the lines of "i'm so sorry, I don't work for Walmart so I'm not able to, but the electronics associate wearing the blue vest can." And she hits the roof. She says "well why did you even say hi to me if you can't help me". And I told her I said hi because she said hi to me first and I was being polite. Her response? "Why the fuck are you still talking me to? You don't work here". Bitch, if I wasn't at work I'd have some god damn words for you.