So normally, unknown numbers, those not in my contacts list, don't even ring. But I had solar project parts delivery, electricians, and solar roofing coming and answered this: "Hello, Bob Wilson here." " I'm <anything> calling from medical screening. We have a DNA test you might be interested in." "Ok" "Has anyone in your family suffered from:" <list of age associated disorders> "No, we're from Oklahoma and all the weak people died a long time ago." After a while, he said "Thank you" and wandered off. If I have the time in the future, I'll chat with them to take as much time as possible. When they ask for a credit card number: "Ok, mail me the bill and I'll send you a check." "<nonsense about a temporary credit card>" "All right, mail me the credit card application." I have a SPAM e-mail account with outlook.com used when dealing with dodgy people. Bob Wilson
We get those on the land line sometimes, usually an Asian or Indian accent. I love to string them along, but it drives Mrs b crazy
