Who called from 9135476704

This appears to be another IRS scam. They are leaving a message that appears to be a recording. Calling me every 3 or so hours today.

April 6  2016 I  have received  4 calls from this number . Recording keeps telling me irs is filing lawsuit. When I call back it rings twice and then beeps

They called 4 times today. Recording comes on says;  "IRS filing lawsuit." I used my fake-caller-ID app on my cell phone to return the call with the FBI phone number showing on their caller ID. They did not call back after that.