Called 3 times within a half hour. Answered once - dead air. Will not answer if they phone again.

Called 3 times no answer only calls our line 3 business line

604-424-9107 has called my home number 4 times the past couple of hours and has left no message.  I have blocked it

I got a call from this number. When I answered it, no one responded, then they hung up.  I want to know who is responsible so I can call them at all hours and harass them.

Same, I answered the phone and got silence.  I called back, and got a recorded message saying, "Hello.  If you received a call from this number, it's because we were doing opinion research in your area today.  Please note that public opinion research is not governed by the Do Not Call list.  That being said, if you no longer wish to receive phone calls, please leave us your name, address, and phone number after the tone and we'll get you off the list as soon as possible."

It doesn't say what the name of the research company is.