This is the regular work of this website. Where did you find a bad reputation website like 1xbit? Because before depositing on any website, you should know the details about that website and then do it. Since you have fallen into their trap, now the chances of getting that fund back are very low because if you do a research in this forum about 1xbit then you will get information about their reputation.
If you have more information against them then share them here.