Static, then hang up. Likely overseas using VOIP and made to look like it's coming from Idaho. I get those a lot.
Other
3
Jun 9, 2016
Received a call, no VM; called them back - can press "9" to be removed from their calling list.
Other
4
Jun 24, 2016
No message, answered the phone and no one was there is seemed. Called back and said the survey I had been chosen for was complete, press 9 to be removed from future surveys