Since you can't connect to their website, the email address and phone number are above. Also, on their online reservation page here are the rules:

The 55,000W rate does not include 10% tax or 10% service charge.

If you want to stay after 6 PM or after, the basic plan (aka minimum) is 12 hours.

*Only international to international connections.
*You cannot reclaim your luggage within the transfer area.
*You cannot pass through immigration.
**Six hour plan is only for daytime use 7:30a-6p.
*Please clarify flight #, date, arrival and departure times, number of people and exact check in/check out time.
*If you are a no show, the reservation will be held for two hours, but then cancelled at the hotel's discretion.