IT does not help with the just phoning bit but does with stopping by.

I do not get that many spam calls but I think that varies a lot, especially between countries with different laws about it.

Besides, telemarketing, door-to-door sales, and scams of all kinds aren't new -- at all.

All of these things existed Back In The Day when a friend might just knock on the door because they happened to be in the neighborhood, too.