It's gotten bad enough that if someone with an Indian accent is calling me and it sounds like it's from a call center, I hang up immediately.
This is my advice to my parents now, who sometimes get anxious over the disgracefully manipulative bait these scammers deploy. "If it's an Indian, hang up." If there's a legitimate need to get in touch, they will find another way. My (naive) hope is that this might also discourage offshoring and/or reward companies employing Americans, if enough people do likewise.
I doubt that. Instead they'll probably start using a service like https://www.respeecher.com/