What make-up? About what you speak. I provided proofs, there are all files which I sent Dave and correspondence is visible. I don't need your coins. The person who provided to me a wallet demands return of the sum. And dave doesn't hurry to send or at all decided not to give.
Why do you think Dave is in control of the money?
The guy demanding to be given his coins by you might as well have moved the coins himself. It's a trap!