I get a couple of calls a week from scammers pretending to be from the IRS. I also get calls from scammers telling me that my Windows computer (I don't use Windows) has a virus. I might not get as many of these calls, at least for a while, because a major call center in India was raided on Tuesday, and 770 people were rounded up.
From Washington Post:
More than 200 police officers descended on a tall, glass-fronted office building where the nine call centers were operating during Tuesday's midnight raid after being tipped off by neighbors.
"It looked like a regular office building and employed a lot of young people who spoke English and had a good knowledge of computers," Singh said. "It was a very sophisticated operation they were running."