Yes, you can submit a claim through the FBI website. It's quick and easy. I had the same person claiming the same thing. I submitted his ( name) the number that he called from and that I have several vmails from this person.
Just got a call from someone claiming to be Roger Williams from Internal Revenue Service, lots of noise in background as a call center, indian accent. Told me that I had tax issues, could not verify any of my personal info after questioning, so I hung up dialed back with dead phone after couple of rings. ALL BEWARE OF THIS SCAM.
100% fake. I played along and when he asked me for credit card/ wire transfer info gave him some good abuses. he abused me back in hindi. its a pity that these guys are scamming people of Indian origin from a call center in India.