do not show no tip.
add a button "I am not satisfied with the service".
when user click "I am not satisfied with the service", make user answer 2 questions, each must more than 10 words explaining the situation.
add the tickbox "i will withhold my 10% tip due to bad service " default untick. (Guess what, you automatically tip 10% if you don't tick.).
In the process, make currently serving staff publicly apologising for giving unsatisfied service. (Make sure customer who stay in line behind the dude see that).

[–] Zachariah@lemmy.world 1 points 1 year ago

I’m waiting or the “just the tip” button.

[–] Decipher0771@lemmy.ca 1 points 1 year ago (1 children)

POS that ask for a reasonable tip, fine. Ones that START at 20 and up automatically get no tip from me.

[–] Fuzzy_Red_Panda@lemm.ee 1 points 1 year ago

IMO none of these computers should be asking for free money and leaving the default option on an amount other than 0.0%.

[–] some_guy@lemmy.sdf.org 1 points 1 year ago

I would never come back.

[–] SpacePirate@lemmy.ml 1 points 1 year ago

What a coincidence, that 50% button is right next to “No Tip”.