There was a ReplyAll podcast episode where one of the reporters actually tracks down a shop in India; even goes there and talks to people who've worked at a "tech support" places which charges $400 to remove fake viruses they've implanted.
I think this is even more insidious because they're preying on people who may be extremely lonely or desperate. When you really think about that, it's really sad. It's either psychopathic or they justify it to themselves in some horrible way like, "These people are losers anyway," or "If we say the girls are underage, then we're only going after sexual predators." .. The same crazy logic used by the Ashley Madison leakers.