Comment by Cacti

There are a series of gates. At the end is the scam. Each gate is designed to filter out those who will reach the end and not fall for the scam. Or in other words, by the time you are making the scam pitch, the scam is already done, because you know by then it will work.

The calls are just one of the early gates, as someone screening your call is likely not to fall for the eventual scam.

The gates don’t have to be clever for this to work. There merely has to be enough people that you are going to find that 0.1% who will fall for it.