Busy making dinner, doing washing, listening to reading etc, when doorbell goes.
Open it to find a nice young lady, who says "hello nothing to worry about, I'm from XXX, a charity for deaf children, and...",
At which stage I cut her off and say (politely), "no thank you, I'm not interested in donating, I'm busy", and close the door.
The look of outrage and shock on her face was akin to if I'd bitten the head off a baby rabbit and eaten it in front of her.
I actually felt a bit guilty.
Bit jeez, surely if you doorstop people just before teatime on a Friday afternoon, most of them will not engage. And yes it may be a worthy cause but I donate to the charities I want to when I want to.