Disgusted by communication

My husband and I went to eat at Mama's Kitchen in Monte Vista, because we were craving sushi. We walked in and took a seat at the round table for all you can eat sushi which is R139 per person. The waiter was friendly and came to serve us. We told him we are going to have the all you can eat and he said that is ok, we can order by him. We then said we will take plates off the round table and he said that is fine and he took our drink orders. After eating as much as we could of the delicious sushi we asked for the bill only to find that we were charged per plate. We were highly confused with the bill and when we questioned the waiter he said no, he said we cannot have all you can eat unless we make a booking. We were highly upset as this is not what the waiter told us. We ended up paying the full amount, but will NEVER STEP FOOT IN THAT RESTAURANT EVER AGAIN!!! Totally ridiculous as the restaurant was also not even full, which makes no sense what so ever!