Well, the burden of proof is on him if you ask me, but let's see what he comes up with. So I'm assuming that he probably has a couple of alt accounts here on this forum since he had to solicit you via PM to get the voucher/coupon codes. Do you mind sharing those alts so we all can be aware? If he's trying to scam a business, I wouldn't doubt he's probably pulled a quick one or two over forum members.
I wish I could determine which forum accounts are his, but I don't know at this point. I could go back through all the PM's and posts I received though if I had to, and probably figure it out pretty easily. I can confirm though that it was NOT the account he's posting from now (Gee, I wonder why?).
What I do have is his email addresses, IP addresses, and the names he used on the site. I wouldn't feel comfortable sharing those publicly though, for obvious privacy reasons, and the fact that my job specifically forbids me from doing so. He may be a scammer, but I think our customers would prefer to know that their information is safe with us, as opposed to me going public with this idiot's info. I wish I could though.
The funniest part to this whole thing imo, is that the player/scammer/liar says he'd hire a lawyer over $100. Second, no lawyer would tell him he'd be successful in winning such a case as gambling online is still illegal unless with a regulated casino. Third of all, this kid can't be more than 15-16 years old through his comments. If there was a bag of popcorn here, it would fit the situation perfectly. Carry on.
*Calls 911*
Operator: Hello, what is your emergency?
Child: Yes hi, an online casino called CoinBet won't return the $100 I deposited with them.
Operator: Online gambling is illegal sir.
Child: Oh.
Not to mention he agreed to our terms of service upon signing up, then blatantly violated those terms and conditions. Any lawyer he speaks to will inform him of that as well. Oh and we DID offer to refund his money. We don't feel it's right to keep any legitimate deposits, even in the case of terms violations, but that's not good enough for him. He'd rather try to extort us to try and get his illegitimate winnings. He even had other people contact us with threats via PM before he posted in here. When that didn't work, I guess he decided to post from a new account. He's really good at making new accounts on this site *and* ours, that's what got him banned in the first place. Sigh, oh well. Thankfully, my workday is almost over finally.