That's a right wank move some casinos have employed in recent times, whereby you can ask to have a withdrawal flushed but it is still reversible. It all comes down to the casino's integrity and how it wishes to interpret gambling legislation, not least of which is problem gambling.
It seems that they don't care about the players as much as in years gone by and are pulling out all the stops to get people to wilt and reverse. Of course there are still some around that flush and mean it, but are becoming fewer by the day.
I don't know what casino you played at but naming them isn't going to make them sit up and repent, and chat can only go on what they've been instructed.
The way I see it flushing should mean just that and it's disappointing to see trusted casinos go down this route in light of today's awareness of problem gambling and the like.
i wont be reversing it mate trust me i was given 250 bonus because i had a bit of a moan about paying around 7.50 per transaction fee on a 300 deposit and i made around 40 deposits of 300 so 300 in fees alone i had to then wager 12,500 euro to meet requirements which took so effort but have withdrew 1000 euros from it never went over the bonus limit
so dont want to moan too much as it was a freebie
I'd just sit tight then buddy. Good things come to those who wait. Be strong and congrats of your 'free raise'