He's a boundary pushing asshole I agree with others. The 'rough sex defence'...has been an excuse for some appalling assaults and fatalities.

If the OP means have we kicked out clients, yes! If they repeat poor behaviour.  Once in a blue moon. Depends on how you interpret 'polite'. I don't swear but I am crystal clear and direct. So 'get out now' is as polite they deserve. I'm not responsible for their 'hurty feelings'.
No refund, they fucked up not me.

Outing not bothered me, nor having the police visit. I have to do what's safe.

I've put clients out. One for acting bizarrely and asking to take drugs and the other for being a rude prick.

I was very firm and offered no refund. The rude one was problematic and swore at me on the way out but I stood my ground.

This was a few years ago now. My screening is very tight so thankfully I don't usually have problems apart from the odd personality mismatch.

Yes some time ago I felt unwell during the booking and had to stop unfortunately. He was really understanding
My head was spinning badly .

I can only think of one occasion when I told the guy I'd had enough and gave him some money back.
I think he may have been on the Autism spectrum, but he could have just been a bossy twat.
 Do this/do that/no I don't like that/turn that way/you are leaning on my arm, stop it!" I remember he told me he'd seen other Escorts and it hadn't gone well. I can understand why.

There were a couple of other occasions when the client was high on coke (and fine, but impossible to continue) and drunk on strong brew (a scary, aggressive abusive cunt ) when I made excuses to leave.. and one older bloke who was simply horrible with me.
Told me to shut up, get on my knees and do what he is paying me to do (not a role play and it came from nowhere)

On all of these occasions I made excuses and left, no money back.
The  abusive guys were reported.