Harry didn’t like being pestered by cold callers and didn’t like being asked lots of irrelevant questions.
And he figured the cold callers wouldn’t like it either.
So, as soon as they started into their scripted questions, he bombarded them with his own questions.
“Who are you”
“Why are you phoning me?”
“How did you get my phone number?”
“Why are you wasting my time?”
“Who said you could phone me?”
“Why should I answer your questions?”
“Who told you to phone me?”
The cold callers usually recognise they are losing this battle and give up.