Depends on why your account has been closed. If your account is suspected in connection to money laundering, terrorism or criminal enterprises then expect a very long wait, perhaps indefinite, until you see your money again. May need to go to court.
If your account has been closed for "business reasons" (as in, they don't want to be in business with you any longer) then you will simply need to provide an account in your name where they will wire your remaining funds.