I received a call at 10:05am and I am on the east coast from a Washington State number - which would be 7am their time. Message was cut off but same as other posters - call about case number and left the phone number.
Same Received call from 360-566-2212 saying it was from IRS and they were filing a lawsuit against me. Message said to call the above number as soon as possible
I am repoting it now to MO and Fed do not call lists and IRS
Didn't answer this call, but was left a message that the IRS was suing me. I didn't call the number (360) 450-0205, instead I looked it up to see if this was a scam and found this site. Thank you for the information. I hope these people get caught.