Received a call as well from this number (360-388-3006). They left me a voicemail on my home phone stating that THIS IS YOUR FINAL NOTICE, but that was the first time I saw the number. Called it back, and it happened to be this people saying they were the IRS. Anyway, soon after looking the number up, came to realize that it's just another phone scam.

just received a call from this #.  scared me but i'm glad i thought to check before calling them back.
https://www.treasury.gov/tigta/press/press_tigta-2014-03.htm
Treasury Inspector General for Tax Administration

Received a call from 360-388-3006 with a recorded message saying I had an IRS judgement against and to call back. I did not because IRS does not work that way and my skirts are clean anyway.  SCAM SCAM!

Robo caller stating that it was the IRS and that I needed to contact them at the number.
I called them back.  A woman answered that sounded like she was sitting outside of a restaurant and she barely spoke English.  She did not follow the protocol that anyone at the IRS follows when speaking on the phone.  She also doesn't understand that the IRS doesn't call people.  I proceeded to mess with her since I already knew it was a scam.   I kept asking her if it involved me not paying taxes on the cash I received from selling my body on the street.

Later I called back to mess with her further and they answered by saying it was McDonalds.
I asked them what time they opened, he said, "9 AM".   I asked, "I thought you were open 24 hrs a day".  He said, "Very small McDonalds, only walk in"

Received a call rom this number as well. Definitely think its a scam.