May 20st 2016 Caller ID said North Dakota call. Robot call said that it was my final warning from the IRS to call them back at 701-897-2533 threatening a lawsuit. SCAM !!! I know better but want to warn others. I seen on another site a few other people reported the same exact thing from the same exact number
Unfortunately the calls in question are coming from overseas (most likely India or Pakistan). This makes impossible to take action unless the county of origin is willing to get involved.