For maximum probability of success, the scammers have to threaten, scream and shout. The most vulnerable of the victims respond to this. If they were timid and

For maximum probability of success, the scammers have to threaten, scream and shout. The most vulnerable of the victims respond to this. If they were timid and accommodating, the call would most likely end up as "let me check with my bank and get back to you. Thank you"