Different timezones don't apply in the UK and although I agree that they are only making a living I am sure they do not have to try and do it at the expense of my limited free time! I am therefore quite merciless.

Latest one

Mr Polshaw?
Yes....
Of 49 etc etc etc?
Yes....
Oh, good. Can I ask what sort of security you have at your house
You are joking arn't you?
What do you mean>
Well. You know my name. You know where I live. You are asking me to tell you if you can break into my house???You want me to call the police???
Click. Brrrrrrrrrrr

My favourite though was not a telesale but a door to door cavity wall insulation salesman. Feeling particularly evil and having nothing better to do I got hime to spend 2 hours explaining the benefits. Got him to fill in the agreement, credit agreement, everything. Just before signing I asked a significant question.

"Can you tell me where you are going to put the cavity wall insulation?"
What do you mean? He asks, going very quiet.
"Just that, well, like, we have solid walls. Where are you going to install the cavity wall insulation? Inside or outside the walls?"

The air turned blue and I invited him to step outside to calm down...;-)

Well... he should have noticed shouldn't he! Nasty little bugger ain't I?

Dave the evil Gnome