They are located in India and Pakistan and as such beyond the reach of US law, even if we could find them. Invest in a call blocker and do not pick up on call numbers you do not recognize.
This number claims to be the IRS, very threatening, 'you will be arrested in 3 hours' unless you deal with us. Total scam, do NOT share any information with them
My mother got the same message concerning me. She nearly freaked out. Called me, and I checked on this number. Definite scam. Claimed to be Shaun Keller - Indian accent. Personally, I know of no person with an Indian accent named Shaun Keller.
Got a message from 'Officer Gary Anderson' (with a thick Indian accent) who informed me I would be arrested on federal charges if I didn't call back. Right.