Terrible Service

My family and I decided to visit the Galaxy Grill at Pavilion on the 27th December 2015 for my parent's anniversary. We arrived at the restaurant at 11:30 and stood outside for about 5min. when no one came to attend to us, I decided to walk in to one of the waiters to ask them if they serve vegetarian dishes which the guy said they do and showed me in the menu. I returned to the front of the restaurant so that a waiter could take us to a table. I must make it clear at this point that there were no other customers in the restaurant at that time. The waiter took our drink orders and returned to take down our meal orders. The waiter returned after 15min to tell us that there is no pizza base's in stock and we selected a different dish. All was fine by this time. The waiter reappears after another 15min to tell us that they out of stock of milk and they cannot make cappuccinos and out of cranberry juice which in turn they cannot make a cosmopolitan ****tail. I asked if I could leave. The waiter went back to tell the manager and the waiter returned to tell us we can leave. The manager didn't even show up to apologise for wasting our time.