Book a hotel and pay successfully. Check-in date. The hotel informs that the room is full. Give one more poke instead, which is a lower price curtain (but not refunded) Or modify the price for us) by reasoning that There is a team of seminars to check in first. The question is, is this already paid? If there is a problem, why not contact back before the check-in date? Why has the room transferred by the customer already paid? Go to rent again? Terrible, not recommended