If I had bad customer service at a restaurant, I would choose to talk directly to them. I think it's good to explain the problem calmly to the staff or manager. Like, telling them what was wrong and how it affected my meal. I believe that staying calm and talking politely can usually help to understand better and solve the problem faster. It's more about solving the issue than just complaining.

If I had a bad experience with customer service at a restaurant, I'd likely take a less direct approach. I would talk about it with my friends and family, just to express my feelings and find out if they've had similar problems. It's more about having a relaxed conversation rather than dealing with the problem directly. Sometimes, just talking to someone about it can feel good and it helps to know if this is a rare issue or a regular problem there.