you should make a new topic on bitcointalk.org in scam accusations about this. This is local forum for pd users and on bitcointalk you will find bitsler staff and Trusted members who can insta ruin the repo of bitsler
one way to prevent hacking of coins is to have email verification first before a withdraw
it will not be anonymous to play a dice site.
If it will be necessary to provide email verification if user wants to withdraw after making a deposit.