As Luptin explained before, you agreed to their rules that they can refuse any withdrawals, and that funds of blocked accounts cannot be withdrawn.
I personally don't agree with the rule either, and I think that it should be made clear what would happen to the funds of a blocked account, but that's another story.
I think it was made pretty clear what happens to funds from a blocked account.
From the FAQ: " Can I have multiple accounts?
No, only one account per person is allowed. Players with multiple accounts will be blocked and all funds, including investments, will be confiscated."
From the ToS: "4.3. Each player is authorized only one account. Users with more accounts, or players who use outside scripts to interfere with our bidding system, including but not limited to VPN services, will be automatically blocked. Blocked players cannot play or withdraw funds. "
How could they have been any more clear?
Well, they tell me that 'the funds are confescated'. What happens to it. Does it go to the bankroll? Does it go to the site creators? Does it go to the mods? Is it waiting for nothing in eternity?