Try other hotel websites for the same hotel and also the hotels direct website, Alpha rooms are only allocated a certain amount of rooms in any given hotel, That does not mean that the hotel is booked out just that Alpha have used up their quota. Providing money was not taken from your card you are free to try other sites, I have come across this before and googled the hotel we were heading to in Spain and rang them direrctly for our bookings, We gave our e-mail address and had it confirmed there and then, Regards Salaried.