[Baz]

Sounds like an over reaction.

Obviously, I may not want to dine out in the company of this person again.

I've slipped a wait person some extra cash before - when I wasn't in control of the tip - and felt they were being shorted by the person in my party who was.

Like you Jeff - I always carry cash.

I don't know enough about the situation to comment further.

At least you had a good time with your friends and enjoyed a great meal, aside from the negative ending.