If this is true, and the casino is indeed accredited, then the question is why? This tale is a clear violation of Casinomeister standards. The problem is not them ending a promotion early, but changing the terms after the fact for players who deposited under the earlier published terms.
There are an increasing number of ACCREDITED casinos that seem to be behaving badly, this damages the integrity of what it means to be accredited. It is one thing to have an "
FU Clause", but entirely another matter when it is routinely used to screw over players who have entered the casino, or a particular promotion, in good faith. In this case, I suspect the CASINO made a very grave error with the initial design of this rather large Christmas offer (15x on BLACKJACK WTF!), and have now realised this, but have decided to correct it by reneging on the offer for players who have already taken part, and not just ending the promotion to new players, as would be the expected actions of a reputable casino.
This badly designed offer should never have made it off the drawing board, let alone passed by management for release to players. To have done this at Christmas only makes matters worse in terms of bad publicity for the casino involved, as it is considered very "bad form" to hijack Christmas to pull such a "scrooge like" stunt.
I get the impression that casinos are firing all the competent staff and hiring fools. It may save a little money, but will make the whole industry look bad in the long term, as these "fools" make one mistake after another, leading to one "stunt" after another as the casinos try to limit the damage, while at the same time trying to hide the fact THEY were the ones making mistakes by trying to pin the blame on the players who took the terms and conditions published at face value, and played in good faith.