I just got the same call and they said I have a complaint against me. :-) Said to call back with a coded number they gave me. So I called back and used *67 to block my number and it was a recording but said it would connect at the next available representative but it hung up on me. So by that I am sure it is all a scam! Be careful.
It would be interesting to find out what political party everyone receiving these calls belongs to. I don't put anything past our government now. I am a republican how about you.