There are many ways to contact them, including their social media accounts, their email
support@freebitco.in, Bitcointalk profiles of wetsuit, TheQuin, freebitco.in PR, CSFBC. It's possible to contact them but the problem is that they don't respond back.
My advice to you is to stay away from Freebitco, hope that they'll give you your money back and then move away on different casino that is trustworthy and not abandoned like Freebitco.
No one should be depositing and playing on Freebitco.in after so many accidents, issues and warnings.
They are been so silent on their case and many times they ignore people posting their concern here. So maybe those people who encounter an issue might not receive any words coming from them. Many got puzzled for this case and wonder on what really happened on them. If they got hack or encounter other serious issues. If they could just be more transparent on what they are going thru maybe there would be a lot of people would understand their situation.
But I guess they decide to remain silent and let any good or bad discussions in this thread. Hopefully there's still a chance for people to recover back their funds and they won't go away then turn into another scam casino.