SCAM. 100% bogus. I received an automated call stating an impending lawsuit; said to call the number. I did and asked for the caller's address. I kid you not she started speaking in what I assume was Chinese (could have been another Asian language; not a linguist; sorry).
Read this IRS info link that the previous poster graciously provided:
https://www.irs.gov/uac/Newsroom/Phone-Scams- ... 6-Filing-Season
Educate yourself! Don't fall victim to stupid scams!
This robot called 3 times this morning, each one being the final notice to call back because the IRS was filing a law suit against me. HA HA HA HA HA HA HA HA HA HA HA.