Okay, here's some little known law for you:
You do not have to pay what a restaurant bills you. Nope. You do not. When you sit down at a restaurant and order food there is no express contract between you and the restaurant to pay what they charge. There may (in some cases) be an implied contract, but that's a big snarl of legal shit to figure out. Not likely a restaurant would chase you for that one.
If you get hit with a service fee, or any fee not shown on their menus or signage in clear print, you can tell them to fuck right off with that shit.
Carry cash. Always carry some cash. And when you need to, short the bill accordingly. The restaurant might get pissy, and you probably shouldn't go back there. But why would you anyway? Fuck 'em.
Mandatory tips? No. "Living wages"? No. I always deduct that shit from whatever tip I was going to leave. Every time. Sometimes I even write notes on the bill about it.
Let them burn.
This is the correct answer.