IRS Scam! Don't fall for the tactics of these thieves. This is not an IRS phone #. Caller ID says Auburn MI. They will harass you and demand immediate payment.
IRS would mail you first if it were an actual law suit.
IRS impersonation scam. Allegedly filing lawsuit, last chance to settle, agent badge number blah, you're going to jail, pay by western union, blah, blah, blah. They had no information on me so they asked me to verify SSN, bank info, etc, all of which just gives them info to steal your identify...
I've had to deal w/ idiots like these when they were doing payday loan scams. They got annoyed with me (yeah, go figure) and started tying up the phone line at work, so I had to do something more than just annoy them back. Tracking the phone number back to the U.S. company that is responsible for the phone number worked really well (the scammers are typically not U.S. based so they have no fear of the FTC or legal action).
989-266-8xxx Peerless Network owns that block of numbers, but it's more complicated. They resell the phone numbers in smaller blocks to other phone providers who in turn sell to customer. So Peerless doesn't provide phone service (true) but they own the numbers.
Also Peerless cannot "listen in" to verify the reseller is a scammer; that would be wire tapping. However Peerless can contact the reseller and tell them to stop calling your phone number.
Reporting scams and harassment that utilize their phone numbers will result in two things, the reseller will get a notice to stop calling your number, and Peerless gets notification that their services are being used for illegal activities. Resellers that ignore a do not call request relayed through Peerless are subject to service disconnection; so the harassing calls will stop. Being informed their number is being used for illegal activities, by enough people, may get Peerless to invoke a clause in their contract to terminate service if their service is used for illegal activities (proving becomes tricky due to wire tapping laws so it's difficult to invoke even when "everyone" knows they're a scam). It typically takes the FTC, a state Attorney General, or some other law enforcement agency to get involved to actually get charges pressed for illegal activities which then invoked the clause against illegal activities.
So please, please be NICE to Peerless. They have rules, that they enforce, on how their numbers can be used by their customers. Ask them nicely to enforce the anti-harassment rules. And nicely let them know they have scammers abusing their service.