Eh, I save rude for the second “Leave.” It’s a human being on the other side of the door. Half the time it’s some kid who just needed a job summer before college. I say hey, I don’t want solar panels right now, have a nice day.
Now, when you tell me to wait, as you stand on my porch, then I’m going to tell you to get off my porch. I still say please though, because my kids might be listening, and I strive to use good manners in all my interactions, in the hopes they will too. You can be firm and polite.
Spoken like a true asshole.