Hey bronyaur,
Sorry to hear the surveys we offer as a way for our players to earn free credits didn't meet your expectations. To clear up any confusion: certain surveys are only available to those who fit the demographic they are looking for. If you answer their precursory questions and you do not qualify, you will not be eligible for the survey.
Not to worry though, you should keep trying different surveys until you find one that you qualify for, or you can earn credits by winning games or you can purchase credits through our pro shop.
There is no need to participate in the surveys if you want to play WGT - just like the game, it's free and voluntary :)
Stay classy,
-WGTpizza