I've sent mail to their support 5 hours ago:
Hi,
I am long time customer who had his acount terminated because of not verifying in time. You can read about my story here:
https://steemit.com/bitstamp/@codemojo/10-btc-seized-by-the-us-government
I understand I can't get my BTC back, but what about BCH that I got for free?
Best,
Jure