Bad service at Dragon Gate Restaurant

This is the first time I've ever heard of dinner buffet diners having to sit with the wedding guests. I made a booking for a family dinner and we went all the way down to Harbourfront only to find out that there're 2 weddings going on. When we check with the counter whether there's still dinner buffet since there're weddings, the counter staff said "Yes. We are open soon, please wait" without further elaboration and looked away, trying to avoid explanations. When I asked a waitress, the auntie pushed me away saying she's busy. When I went up to the counter for the 2nd time to ask again, saying I would cancel my reservation if we are allocated to sit in the hall where there's a wedding starting soon, the man say "You only booked for 4, so no room. Ok, I've cancelled your reservation.". Not even a "sorry" was given. Such bad service. We were so disappointed.