To follow up on the other response to your comment, remember that for these scammers, this is their job, and they do it over and over again, day in and day out. They know what strategies work and what doesn't, and manipulating people to doing something stupid is their whole goal.

They are experts in scamming people, and the people they are calling are not experts in detecting scams.

It is important to encourage people to trust their Spidey sense, most people know something seems off when these calls come in. But we need not trash people for falling for scams.