This number has called 2 times today with the message "this is the IRS, and to call them back". The IRS would never call you, if there is a problem they send you a letter! This is a scam, they are using a recording to seem more official. Do not call them back or give them any information!
call from 540-218-6255
"this is a final notice from IRS, Internal Revenue Service about a lawsuit we are filing against you. Please visit your local IRS office or call us for more information at 540-218-6255"