Called 1st time and left no message, so I added them to the call blocker feature on my phone. Then they called back twice after that, within 2 minutes.
Just got a call from this number at the office- he identified himself as Tom Almore from the IRS. It sounded kinda shady, so i tried to ask him exactly what he was looking for, and mentioned something about IRS 941 payroll withholding. I took a message and told him someone would call him back. After Googling the phone number, I'm adding him to the blacklist!