This number called me and hung up.  When I called back, a British woman's voice responded with "unavailable at this time"

I got a call from this number this morning ( 06/19/2012). I didn't answer the phone.

Received the third call this month from this number 971-208-9939 the first call on 06/08 I answered they did not speak the second on 06/12  I answered they said something about a short survey something to do with America and you would get a free two day trip for taking the survey, I hung up. They called again today 06/19 but they did not speak, I spoke into the phone and stated that I was on the do not call list don't call again! If I receive another call from them I will file a complaint but I don't think it will do any good by seeing the comments already posted here. I thing I will be purchasing the TeleBlocker I hope that it works to block calls.

9:02 AM they call my cell--obviously a robo call. Tried to callback and get a recording from a lady with a british accent that the number is not "available".

I AM IN CANADA AND THESE TELEMARKETERS OR SCAMMERS CALLED HERE.  REASON. WANTED ME TO PARTICIPATE IN A DEBT CRISIS SURVEY.  FIRSTLY I AM NOT AMERICAN AND SECONDLY IT IS AN INVASION OF PRIVACY!!!