Got a call right now... thank god I didn't answer.

this place keeps calling me. believed to be fraud or scam

First there was a man that did not identify himself, Indian [country] accent  IRS is issuing warrant - I've been found guilty. . Very threatening. I probably revealed too much - we have locked mail delivery - no problems - 'I'd been sent  3 notices'  = 12/13 & 12/14 [ gee that is stupid]. Then man threatens me with a warrant of arrest! This time demanding $2500. Then threatening I'll be arrested [ probably 6-8 times] if I hang up - then passed to 'supervisor'. She attempted to be as intimidating.
I was finally given 206-866-5656, since I wasn't believing. Nasty lady when I said this is not a government #. 'Do you want problem solved?' = I hung up.

I have been getting this very same annoying call everyday saying that they were going to sue me about my taxes, and to make it so bad about it I have not even filed my taxes yet its usually a guy and he has a strong accent however the same similar area code called later stating that  I QUAILIFY for government grant money I told them never to call my number and that I AM  aware they are a scam they quickly hang up the phone.

Same, reported.  Robo-call saying to, "Regard this as a final notice" of my IRS debt and that the IRS would be pursuing a lawsuit against me if I didn't call back right away.