They said that they are sorry so it means they apologized you. On another hand, word apology can't change anything but good to hear.
11.3 BtC isn't low amount of money, so blindly withdrawing from their side wouldn't be correct action but 5 week isn't also correct too. If we compare current price and the pricr which was 5 weeks ago, I think you don't need compensation because price is now very high and you will be in good profit.