I've had a bit of a look through the forums and this seems like a pretty common theme. I purchased the game yesterday and didn't get any confirmation email detailing account setup. I have been playing the 0.21v beta recently (completed everything it has to offer!) and really enjoy the challenge of the game. I'm thinking that maybe as the transaction is still pending on my credit card that you haven't received payment confirmation or possibly it was a server glitch?
Anyways I know there is a bit of a slow down as it is the festive season but looking forward to playing the full version of DD.
Cheers for your help,