Shocking Service at Bossa Canal Walk

We got there at 14.20 and placed our drink and food order together at 14.30... time was passing and no food was coming out... people who came in 20min after us were getting their food (and they had more people than us). We asked the waitress about our food and she said they were extremely busy but she was sure our food was being prepared. At 15.40 we asked to see a manager. Other waiters walked around our bay of tables with plates of food asking each table if it was their order and came to us but it was not our food... when the manager arrived he tells us we should not have been seated for food as they were too busy to cater for more food orders. I said to him that tables of more people than us, who arrived 20 min after us were seated in our area and they had received their food already. He then said he would go check what was going on. He then ran around like a headless chicken. He walked back to our section but walked a long way around us to POS computer in our bay but didn't come back to tell us what was happening with our order. After another 15min of him avoiding us, we cancelled our order at about 4pm and walked out. Never before have I received this terrible service from any Bossa... at other branches the food is always great and comes out quick even when they are super busy. And the managers are super friendly and helpful... this manager was absolutely clueless how to run his restaurant... the fact that multiple times waiters were walking around our bay with food asking each table if its theirs already shows how bad this specific Bossa is run... and they were asking other waiters "where is table 104?" Absolutely shocking... that branch will NEVER see us again...