Sometimes, someone IS on the other side of the receiver.
I say "Hello!" And the reply is "Barbara?"
My mother's name was Barbara.
I generally ask, "Do I SOUND like Barbara?" That usually flusters the caller and he hangs up.
If they ask to speak with Barbara, I am more civil and explain that she has passed away and that I would appreciate them removing my number from their call list.
Generally, I am met with polite compliance. Occasionally, the caller will say, "Well, you'll do!"
No...I WON'T do...sorry, but a string of expletives generally issue from my mouth before I slam down the receiver.