Got a reply from Cassava:
"Thank you for bringing this matter to our attention and please allow us the opportunity to address your concerns.
The exchange rate you receive when you make a deposit/withdraw is one that is determined on a daily basis and is implemented into our systems. These exchange rates are comparable with the daily commercial rates offered by banks and credit card companies.
Please understand that we cannot provide the exchange rates for the next few days as these will change depending on market fluctuation. The rates we use for withdrawals are determined on the day the payment is processed.
In relation to your withdrawal request of 400 USD on the 19/1/2013 this was paid out on the 21/1/2013 as 282.61 EUR with an exchange rate of 1 EUR = 1.415378082870387 USD.
Please note that if you wish your bank to do the currency exchange rather than 888poker, all you need to do is to request all future withdrawals in USD.
Piteira, should you have any further questions on this issue please do not hesitate to contact us again.
I thank you for your cooperation and understanding.
Kind Regards,
XYZ guy"
what a bunch of scammers, last time 1 EUR was more than 1.40 USD was in 2011, the dates they mention are wrong, this transactions were made this December.