They have called now 4 times and nothing on my voice mail!!! Twice from the same number and then two other times from same number but last two number were 217-557-6643 and 217-557-6644 and 217-557-6638
Same thing reported by others. They called early Saturday morning (9am) . They left vm saying there was an urgent matter regarding my recent tax filings and I needed to call back as soon as possible.
Just got one from 217-557-6643, answered and it was a recorded message saying call Kevin Gannon at a local number (which I didn't get down in time) and then it hung up. The called ID said "IL ST OF" - so I'm not sure whether it is legit or not. I do think I've always gotten things from IRS in the mail, so that seemed odd.