I got banned from a quiet wetherspoons for simply politely asking why the chap who came in after me (actually WITH me, but behind) (both 5 mins before last orders) got served and I didn't, especially as it was still just before last orders by their own clocks.
"hi, can I have a 2 pints of X and a glass of X please"
"no, it's gone time"
"sorry, has it, your clock says it's still before, and you haven't called last orders"
"that clock is wrong"
"no chance of it then? I did come in before that chap but he barged to the front and you served him first"
"no, stop arguing and get out, you're barred"
😯