Why did you do business with them in the first place if you don't trust them with your personal information? The
Terms of Service (which you agreed to when you signed up) clearly state that they "will request identification information" and can freeze your account at any time if you don't provide it. They are legally required to collect this information due to anti-money laundering regulations. If you used their service with no intention of ever providing your personal information despite agreeing to a TOS saying you will be required to do so, that basically amounts to fraud on your part. Your chances of getting your money out without handing over your information are not good.