This is one of the reasons I have an excellent PVP with Carnival. This has happened numerous times to us and by simply calling him, he will changes the rate over in seconds and sends me a new confirmation. The only time he could not do it was when there was not a room available in the category I booked however he made a call to the Ocean Players club for me and took care of it. If you don't have a PVP, I would suggest calling the Players club and they should be able to handle for you. You should not loose your deposit.