I have two different numbers, both going back to a political group survey and got the same message when calling back. 971-208-9955 and 360-529-6963. I called both and asked to be removed (got the same recorded message on each). My cell phone # is also on the do not call list. I was told a while back from my carrier that cell phones don't adhere to all the same rules thus making it harder from even my carrier to block them.