Room was ok, but we didn't get the room we ordered...

Room was ok, but we didn't get the room we ordered, we booked it 3-4 months in advance for a King room, but when we arrived they told us there we're no kings available anymore, so we didn't agree especially with such an early booking. After complaining there was suddenly 1 free, this is the kind of practices that I hate hotels doing, you have been warned.