Actually, that made me think of a good idea. If the provider employees aren't aware of what's actually happening in this situation or just don't care, just write, "I didn't read this form" on the signature line and hand it back.
Have a good laugh when that document is presented to a judge.
I think signing "FORM NOT PROVIDED" might go over better with the judge, than outright stating what can be perceived as your own ignorance in signing something without reading it. That is, cut off the possibility that the judge, when presented with the printed form and your signature printed on it, interprets it as you signing "I didn't read this form" when the text was in front of you.
In principle, when there's a problem situation you are documenting, I think it's better to make sure you document what the other party did wrong first and foremost, then move on to what you did in response to it.
You don't even need to sign anything sensible at all. They almost certainly aren't going to check, and if you try to defraud the restaurant by refusing to pay, you might find yourself in trouble, regardless of signature.
On the contrary, I’m not trying to defraud anyone. I’m using a custom signature as evidence that it actually was me; if someone swipes my card and uses it somewhere it’d be obvious that it wasn’t me because the signature would not match the consistent deterministic gibberish that the real me would have signed.
Have a good laugh when that document is presented to a judge.