“When you are an affluent-seeming white man and you ask for things that don’t belong to you, sometimes you’re not really asking. It’s sort like Bill Clinton asking Monica Lewinsky to have sex with him. There’s a context behind the asking.
When you ask a serviceperson for something that doesn’t belong to you, there is often a subtext of, “If I complain to your manager, you know your manager is going to listen to me. Just look at me, and look at you.”
And sometimes, of course, this is not the case at all, and you’re just being a garden-variety annoying customer. Or a bully.