@Cratoon, if you are completely certain that he abused your system and can prove it than you don't owe him anything. If he cheated why are you offering him a $100? Just lock his account.
If you can't prove he was cheating, you have to pay him in full or at least talk with him and try to reach a compromise.
Also, can you, please, explain what do you mean by this:
Well if you haven't deposited anything, you haven't lost anything either, innit?
See, the thing is we discussed with him (in our main topic) that we are willing to offer $100 bonus if he explains how he was betting to analyze the situation.
He filled his part of the deal by sending us a support ticket (although no useful information was presented in it), so that's where the number comes from.
Reading the situation, I can say, the luck is on OP's side by winning that amount just by using faucets.
This is the importance of having a comprehensive ToS, including the use of faucets as well as withdrawal requirements.
Paradice has been here for long already and it is the first time to read such an accusation to them.
Hopefully, both parties will reach to a settlement here. But wondering also how the OP can gain such amount just by using the faucet?