These days I'm reminded of just how many bible-bashers and salespeople I missed out on when I was working. Only yesterday I had to fob off two polite old ladies who wanted to save me from Hell and damnation. If I had the cheek, I'd say tell such people that I'm a Pagan (the boy would, but then - he really is a Pagan), and on the look out for human sacrifices. However, I'm so polite that I actually let them give me their little speech before turning them away.
Sometimes I'm a little more alert. When I hear the doorknocking, I tiptoe into the front room and peek out of the window to see who's there. If it isn't someone I actually want to see, I just pretend I'm not home.
Fortunately we aren't bothered by Mormons **. There is a whole nest of 'em living at the end of our street, but I think they must have a rule about not hunting too close to home or something; they generally don't come to our door. No, mostly it's the Jehovah's Witnessess ("Jehovah Jehovah Jehovah!" Sorry, that's my Life of Brian memories coming back) and people trying to sell vaccum cleaners, discount books and home ventilation systems.
Then there're the telemarketers. Admittedly, it's better than them ringing up during dinner or in the middle of BtVS (reruns still showing on Sky One), but really, any time is a bad time to be called up by telemarketers. Even if I can fob them off by claiming to be outside their demographic (which means pretending to be under fifteen), or a non-consumer of their products (i.e pretending I don't drink commercially made beverages), it's still five minutes of my precious pre-labour resting time which have been stolen.
I think my non-English-speaking mum has an advantage over me when it comes to unwanted callers.
**Postscript - I should perhaps have made myself clear that, when I said there were a nest of Mormons at the end of our street, I meant there was a nest of Mormon missionaries, as opposed to a God-fearing Mormon family which respects other people's right to their own beliefs (or non-beliefs, in my case). I didn't mean to offend all Mormons. I did mean to offend door-to-door missionaries.