Poor service and management.

Went out to celebrate our daughter's graduation tonight. Ordered our food quite late after most patrons have eaten or were busy finishing up, with many started to leave, but we still waited nearly 30min for our food. When our food arrived, the waiter made a mistake with our daughter's food whom we celebrated the evening. Her food took about 10min to arrive, the rest of us were halfway through our food. Furthermore, I ordered a medium steak/rib combo, and got a steak totally well done, even burnt on some edges. Waiter did asked me if he can exchange it, which I declined because I didn't want to wait another 20min. The whole dining out was already spoiled because my daughter was eating a salad while the rest of us continued eating afraid our food would get cold. This all spoiled an evening which was supposed to be remembered for our daughter's graduation celebration. They even wanted to charge me fully for my rib/steak combo, which I refused to pay, in the end they charged me for 500g ribs only. When I confronted the manager, he acted like he knew nothing about the whole incident, which is BS as the waiter told me he talked to the manager regarding our bill. There are many restaurants to choose from, mistakes happen, but to treat a situation like this is a real disappointment. This was my last time going there.