Napkin Usage Fee

I am absolutely fuming right now. My wife and I went out for a simple barbecue dinner and ordered a basic $41 meal of ribs and sides to share. The waitress dropped off this $234 bill with a handwritten note telling me to pay it and cry! They charged me a $20 air conditioning recovery fee and a $15 napkin usage fee! A NAPKIN USAGE FEE?? I used one single paper napkin the entire meal! When I demanded to speak to the manager about these absolutely fraudulent hidden charges he laughed in my face and threatened to call the police if I did not pay the full amount immediately. I feel completely scammed by this shady smokehouse. Am I overreacting for wanting to dispute this entire charge with my credit card company and report them to the Better Business Bureau?