Bridgeways Misleading advertising

Bridgeways had a specials for 20 group for 89.50 on the add its states pre - booking only 24 Nov-15Dec. We made a pre-booking on Tuesday the 05 December for the saturday 09 December. We received emailed back stating 7day in advance pre booking should be made. NO where on the ADD DOES IT STATE 7 DAY PRE-BOOKINGS ONLY. We have emergency services family members who are shift workers and was only available for this weekend hence the reason we wanted to go. I called your call centre and the consultant could not show me or advise me where on the add does it say 07 day pre bookings . Was the add just a lie, you have basically ruined a fun filled weekend we had plan. Kindly advise how you will be able to accommodate us especially because we wanted to make the booking pay on the day but was advised 7 day pre-booking and this does not state on the actual add.If the add stated we needed to make the booking in advance 7days we would have clearly adhered to the add.