Which is why I think I may have done duplicate surveys. It could only be that. However, you would think they would let you know like on some other sites that you've completed a survey before. I'm new, but I fill out a lot of surveys because I am on and off here all day long, and after awhile, many of the surveys look the same.
However, I know I will get these two from today revoked in around six weeks, because the surveys were flawed, only asked my details, then gave me the credits without actually going into the survey.
I never had that happen before, and it happened twice today (well, yesterday now).