at this one pho place, we waited 2 hrs for our food, received cockroaches in the food and the waiter was sipping on his drink but we did not receive any. The fukin cook was too lazy to make crispy chow mein, so the waiter denied my order. The worst part was that we kept going back because it was the closest one thr but left no tips.
when we waited 2 hrs, the cook was on his break and we were the only ones thr, makes me angry and i want to vandalize the place saying, "Poor Service!"

otherwise, my family usually tips as minimum has possible.