Hi greylady,
We are sad to hear that you feel like this. We always try to be as fair and just as we can. However, we are human and we do make mistakes sometimes. This time, the mistake was found out after it had already been credited, so of course we will credit the rightful winner and since it was our mistake, we can't really punish the player that was mistaken for the winner by taking back what we had given.
During the promotion in September, there was unfortunately some technical issues, some changes were made and we tried to make the best out of it. In hindsight, it could perhaps have been handled differently, but we hope you understand that we are trying to be as consistent and fair as we can. These promotions are supposed to be something positive.
Best regards,
Team Videoslots.