Peace, but I beg to differ, I am Austrian and (like most other Austrians and Germans) normally do leave a tip of about 5% of the invoice amount (more if it was really good, less if I feel that it was really bad). Paying the exact amount of the food is normally considered an insult to the waiter if he has really misbehaved (I have also done that, but not in this place). Mentioning that there is no service charge makes sense to me if the customers are English-speaking and might otherwise understand that the service is included like in their home places. Sorry about your bad experience, I was there a number of times and always found it an agreeable experience.