I do almost daily. Someone is always calling to sell me something and I tell them I don't have time to be conned or ripped off. Then I hang up before they can respond.
Mostly telemarketers and scam artist. Just a few days ago I answered the phone and a guy congratulated me for winning a new Mercedes and 1.5 million dollars. I told him I already had too many cars and too much money. He hung up on me.
True Story, bro
I think it's disrespectful and rude.