Who receive several unsolicited phone calls (scams) that offer free vacations or solar panels or whatever other reason they can think of to get your credit card, try wasting as much of thier time as you possibly can instead of hanging up.
I just kept a guy on the phone for 15 minutes talking about my made up friend named Leroy and his poodle who live in Florida. I cannot express how much it filled my heart to hear this guy get more and more frustrated as he waited for my credit card number, only to be led on a journey of my imagination.
I used to ignore the calls or hang up immediately but I have found that this is WAY more satisfying. I almost look forward to thier calls.