These calls have become very anoying.  I have not picked up the phone and they leave no message.  

Anyone know what this is?

Claims to be Xavier calling on behalf of the DNC to conduct a survey. Stopped calling after answering the 3rd call and telling them I'm not interested in participating.

This company calls everyday and will not leave a message. Since I screen all calls from unknown sources I will not bother to pick up. If the calls continue I will just have the number blocked.
I still don't know why a valid company would use cold calling as a method to get new customers. If what they were selling was truly valid there are far better ways to get the word out. I will never purchase any product from a cold call.

I got the call from 619 342-0202   I told them to get F$@# ed right off the bat. Who are these people???

Person called, grandfather answered the phone could not hear... "Junior" on the other used some expletives and ended the call.  He had the nerve to call back immediately after hanging up.  I answered demanded to know who was calling and wanted to speak to a supervisor. "Junior" hung up.

Guy called and asked for a name if she lives in that house. Then asked if that person is a registered voter. He said he is investigating on something and asked to hold on then hanged up on me. This is very annoying and should be investigated.

The number hit my caller ID in Las Vegas, NV at 4:26pm on July 24, 2008.  I called it back twice (with my number blocked) and it went to a fast-busy (the "all circuits are busy sound) both times.

This person calls and will ask for a name and when answer and the person ask how they get this number and has been asked to stop calling, they hang up. When someone calls back they just hang up.