Duelbits is going on its 2nd year as a reputable casino I recommend backing up your claim by posting screenshots of your account, transaction ID and conversation with support just post the link of the screenshot without it there's no accusation to talk about, Duelsbits do not act that way, and we have to hear both sides.
I support what robelneo is saying. In this section we see many scams but we also see cases of unfounded accusations against sites that are later found to be false for some reason or another. If you want to give strength to what you say, you will have to provide something more than your words.