You've got to be kidding me, r3wt is plainly stealing because he was mad he sold his services for 0.4 BTC. he literally has no excuse for expecting any sort of sympathy. That's like a thief asking for forgiveness after being caught riding a stolen bicycle because he wants to become a race-car driver.
Seriously, just give back the stupid 0.4 BTC. I mean really man, that's like $40 dollars in the current market. You're going full retard by saying that they shouldn't of expected you to make a shitty product because you offered a low price.
I know there are a lot of naive people in the world, but ~$40 to make a client and launch a coin? I know the ONLY way I'd ask that little is if all I had to do was take the existing source code and then search and replace the names and maybe do 1 or 2 tweaks. I ran an online game for several years and the programmers were paid over $4000 for the initial product. An additional $3000 was spent updating it to AJAX to allow realtime viewing of movements instead of hitting the F5 key over and over.
Here's what should have happened:
Admin looks for programmer
Programmer quotes price
Admin accept price
Programmer realizes price quoted was too low
Programmer apologizes to Admin and asks to renegotiate fee
Admin either accepts or declines new fee
Programmer lives with decision.
What would GASCoin have said if you PM'd him and said "Dude, I need to hire testers, would an extra .2 BTC be acceptable?"
Answer: YOU DON'T KNOW because you didn't ask.
Maybe he would have paid, maybe he would have supplied his own testers, maybe.... maybe...maybe.
If this were the real world, and you had done work for a bank and used code to give yourself money and got caught, you'd be in jail.
Personally, I agree with coinerd. All of this is dragging both sides down. At this point everyone needs to walk away.
GASCoin: I hope you find a programmer and get back on track
r3wt: You've already said too much, walk away and don't come back. I doubt Mother Theresa's backing would help your reputation now.