ncviz: It's really not even about the credits, anyone that knows me could guess about how much I have, and you can look it up. It's about doing something and having expectation of getting things in return, then told to go home with nothing.
That's exactly it. In my case it's about credits too, because I have very little and am not good enough to get by in Ready Gos and tournaments, but the most infuriating is that you do them a favour by spending hours answering surveys, and then get nothing back in return. They broke their promise.
I simply don't trust them any more, and I'm sure I am far from alone. I'm not wasting time doing any more surveys until the last batch of 75 credits is received. Whether that happens or not is a big question mark, but given the trouble of receiving credits for some other products I'm not holding my breath.
In fairness I should say that I got the credits for LoveFilm and VistaPrint instantly, but the smaller credit sums seem like an impossible task to get. For them it's probably real money saved, so they are being difficult over small sums hoping we won't bother to follow up. But some of us do. And TrialPay's reputation on this site is seriously damaged.