I do not answer call with area codes I don't know. Just ignore them and maybe, just maybe this yahoos will lose interest, but somebody is paying them for something, and also, someone that doesn't know any better is answering, hoping that they have won a million dollars. What an idiot!
To all that have an Android. I found this nifty app called mr.number, and you can find it in the android market. It automatically displays the name of the business that is calling if its a known number in there database. This number just called just called me, and it showed up as "suspected spam". And this number is now set to automatically pick up and hang up and I don't even have to worry about being notified my phone had even picked up. I hope this helps! Cheers!!!