Now my account is locked and they want my passport and driver's license. They already have my home address, name and home phone number.
This is a really shitty situation. Is this your first time using this exchange?
I wanted to know more about KYC and Withdrawal Limits at Okex but I only have find that there a 3 level accounts. But I didn't find any information what kind of data they asked for the different accounts....?
source:
https://www.okex.com/support/hc/en-us/articles/360014344392-KYC-and-Withdrawal-LimitsSo is it possible that you have exceeded the limit?
But regardless, at least they could send everything back to you. Would you really go for a lawsuit?