This number called me today. I dont know it so didnt answer. The voice mail only says hey

This just started yesterday (3/11/13) and again today (3/12/13). Called back. They want you to complete a brief survey in order to be entered into a contest to win a cash prize. Needless to say, I did not take the survey.

Has called several times when i call back get a recording that its a non working number