They can be thankfull that noone is suiing them yet cos lost of money due to unacceptable delays ... and no support!
We as a customers cannot let exchanges do whaetever they want to do with our assets, no way.
Ah, I misunderstood then. I thought that the deposit credited to you on the 20th confirmation, it's just that the number of confirmations were lagging behind a little bit. But what really happened was that you contacted them and only then did they credit you with the amount, is that right?
In that case, they really should refund you the difference. However i'm pretty sure that the terms and conditions that they have made that everyone has to agree to before they sign up states that they won't be liable for any losses incurred like this.
So even if you file a lawsuit they always can refer you to the no liability clause.
This definitely classifies as shady behaviour though, there could be a possibility that they want to keep the value of BCC artificially high for whatever reasons.