My husband also used to have fun with these callers.
Now he limits himself to political calls. He can tell who they are and which way they are leaning and answers the opposite of what they would like.
I hate all these calls. Even the charities. If I want to donate money (which we do) then we contact them; they don't have to call us.
We get a lot of calls from states! Caller ID will say, "State of Florida" or "State of Oregon". I never knew a state could talk or make a phone call! I wonder what their voices sound like, since I don't pick up! ha-ha
By the way, Ranger, they are now calling cell phones!