Yes. I received a call from this number and thanks to this site I will not be calling them back. If the IRS was really trying to get a hold of me, they would send me a letter.
Scam. Called, left same message about lawsuit. This is a scam and is rampant right now. Notice they leave no file or case number when they leave a voice mail message.
Received an automated call stating "The IRS is filing a suit against you." And said I needed to call back immediately. I know it's bogus. The IRS owes me, not visa versa!