Received a call at 8:50 A.M. (CST) 11-13-15. Caller claiming to be IRS and filing a lawsuit against me. Do not call these people back. Do not give them any information. Report them and block them. The no call list is a joke so don't bother with that it's just a waste of your time.
Received a (breaking up) voicemail from this number. Called back via *67 and voice with an accent answered "IRS" with a lot of background talk. Knowing that the IRS usually intiates contacts via mail, I hung up. Do not give any information over the phone to anyone claiming to be from the IRS that calls you.