Canceling customer bookings one hour before booking?

Really? We booked 5 days in advance for 3 adults and a 2year old. You phone us now, one hour before our booking to tell us a two year old is not allowed "as you do not have a kiddies menu". Unacceptable. Where must we find another venue at such short notice? Also, we have a well behaved and socialized two year old who is eating "adult food" with us. Pathetic