I brought my grandma and family to this restaurant for a nice Chinese dinner. We ordered a full table of food, and we discovered two dishes that were not up to par.
The first was an oyster hot pot, where several oysters were not fresh, and had a prominent stench to it. The second was a mapo tofu (where we asked for no spice) and the tofu had evidently gone bad and tasted sour.
We reported these two dishes to restaurant management, who removed it from our table to take to the kitchen, only to come back out and refuse any responsibility.
Instead, they placed the blame on my family for having "different tastes" because other tables ordered mapo tofu and had no issues. Well, everyone else ordered mapo tofu with the spicy sauce, which covered the sour taste -- our dish was not spicy and we got the true taste of their "fresh" ingredients.
If your ingredients have gone wrong - at least own up to it. We did them a favour by bringing it to their attention, and they responded with a bad attitude.