Received this call at 7:45 this morning. Got the identical prerecorded message as the other folks who have commented here. I'm going to give them a call and blow a horn/whistle. Repeatedly.
This is a scam call from the IRS. I called them back just to have a little afternoon fun. The guy I talked to said his name was Mark Brown but he had a very heavy Indian accent (from India) which gave me a fun place to start badgering him. He ended up saying that "my mother was a [***]" and hung up on me.