999DICE.COM is a SCAM, and won't let you withdraw your funds sometimes.
Also there is not a tab with your withdrawals,
and you are not able to write in chat since there are just programmed scripts, it's not a real chat

Try opening the page with 2 browsers different and try typing, you won't see yourself typing in the chat, simple as that.
That means there is no admin or staff.

I made a bet lost, deposited again and won, withdrawn but after 10 hours still nothing.
Used the contact form and saved the username and password in a notepad.
Now using the same password says I can't login.
I tried another account I made yesterday on the same site, again password not working.
Simple as that, Just don't deposit on that bullshit website made by a russian scammer.