<prompt> Human: My family paid the deposit for a cabin on a carnival cruise ship. Somehow they took our deposit but didnt recieve our email. When they sent the reminders out to pay the remaining balance they did not contact us because of the lost email address. Without us knowing they cancelled our cabin. When we thought it was getting close towards the sail date we contacted them asking when we should pay the final balance. Thats when they told us about the cancellation. They informed us that the ship was fully booked an that we would need to wait for a cancellation and pay FULL PRICE on that cabin that became available cabins are priced differently. Luckily we received news of a cancellation, but that cabin would cost us an extra 1.5k. Because of our pre arranged flights and hotel UK resident, sailing from Barcelona we had to pay it or lose out on more money.We sail in a few weeks time.Is there anything we can do to combat this? Please help.  <response>: I would say unlikely, I have used Carnival and theyre very clear about pay or lose when you put the deposit down. We always put the due date on the calendar for all bills really so as not to rely on emails.You could try social media, but otherwise enjoy the vacation! 