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.
If you answer and say hello and there's an extra second just hang up. They'll call back if it is important.
If the message mentions anything about stupid stuff like tax fraud/social security number its just immediately deleted, you'd 99% of the time receive official mail for anything about these items.
"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/