1 PRAHA HOTEL Reservation Please, cancel this reservation number ***. It is false B. Julie Jackson 5 months ago Hi partner - thanks for posting in the partner Community. We can't take this action on your behalf, you will need to contact our customer service team. This help article might provide you with the correct process to complete this action without calling us. To find a dedicated phone number to call, log in to the Extranet, click Inbox, then Booking.com messages. We don’t publish these phone numbers here because we only offer this service to current partners. Thank you for your partnership and wish you a fast resolution.