It's very sad reading your story involving this amount of asset. Although the duelbit team can decide to help you out at their will which I pray they should consider you but if otherwise then they are not at fault and will not be responsible for your loss. It's our sole responsibility to be careful when making any transaction both deposit and withdrawal. Disclaimer notice and warnings are there to prevent things like this from happening but human by nature is fallible and mistakes like this are bound to happen. Sorry for your loss once again.
Duelbit is one of the reputable platform here in the forum and I believe they'll want to maintain that reputation by serving the customers with utmost satisfaction to their ability. Since you have bring the issue to the attention of the public in the forum, let await the take of Duelbit team on the case and see how it will end.