Well
I did tell a 'customer' to fuck off once when I worked for the DSS.

Mind you, it was my last day before I moved to pastures new and he was being a complete arse to me after I asked him 'if he'd tried ringing the Contributions Agency himself first'. Being that if I rang them on his behalf I'd end up having a 3 way conversation on the phone, from behind a screen and round a corner where the phone was - not an ideal situation... I think 10 years of pent up frustration got the better of me at the point when he started accusing me of not being interested and deliberately unhelpful - to which I replied "you want unhelpful? Get out".

Stunned silence.

"Go on, fuck off out of here. I'm trying to explain why I asked the question I did and all you're doing is ranting at me. So if you can't be civilised, you can fuck off".

"I'm going to report you"!

"I. Don't. Care. I'm leaving here at 4pm and never coming back". *Brief pause* "You still here"?

*grumble mutter*
( Davros' Granddad a voice of calm reason in a world of spastics., Thu 21 Aug 2008, 12:31, Reply)