I would’ve just walked out. There’s no such thing as mandatory tip. Even in restaurants that have “gratuity included”. If you tell the server to take it off, they have to take it off. As long as you pay for the food, you’re good.
This happened to me and my 2 homegirls before. This service was not good, we only saw the waitress twice. Once when she took the order, once when she bought our food. We had to flag down someone else to get refills, utensils, napkins. We still were nice enough to leave a $20 tip that she didn’t deserve. bytch had the nerve to try and stop us and say “Y’all are shorting me $30 because the suggested tip says $46”

bytch, How can we short you a SUGGESTED tip? You didn’t even earn the 20 we gave you. We should’ve taken it back.
Ended up writing a bad review on yelp, the manager contacted me and invited us all back for a free meal.