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.