most of us know how affiliate thing works the question is how come he didnt get commision from his affiliate who wagered 1 btc on that site
Either the user didn't create their account via the referal link provided by OP or they didn't wager 1 btc.
Another possible explanation is that OP is simply lying to us. A scenario that wouldn't surprise me.
If OP would give us the username of the account they are talking about, I could verify the situation myself and investigate what exactly happened.
I doubt that would happen though, as OP is busy making racist statements, insulting people and being upset.
That is good suggestion to provide his username than it could be easily verify whether OP is right or telling the lie. That site has easy verification so that I'm also agreed with luptin that is more valid suggestion.