I was having lunch in a neighborhood restaurant a week or two ago, and I noticed that the waiter hadn’t charged me for my coffee drink. I pointed it out to him, but it was noisy in there, and I couldn’t hear what he said. He didn’t change the bill - just left it like it was.
Today I had lunch there again, and the same waiter waited on me. Again, there was no charge on my bill for my coffee. I was not in a confrontational mood, so I just paid him and left.
Since I am a regular customer, they might be doing this on purpose, but maybe the waiter is just being lazy.
What are your thoughts on this, morally speaking?