send about business
send (one) about (one's) business
To dismiss one or send one away, as from employment or from someone's presence, especially rudely or abruptly. When it became clear he was only interested in making a profit for himself, we sent him about his business. I always send door-to-door salesmen about their business whenever they catch me at home.
send (one) about one's business
to send someone away, usually in an unfriendly way. Is that annoying man on the telephone again? Please send him about his business. Ann, I can't clean up the house with you hanging around. I'm going to have to send you about your business.