It's amazing how arrogant it sounds when you they say you are offering too little money. People used to be grateful when you donated to them. I understand its difficult to raise funds, but space invading is awful, and chugging should be in desgnated areas like those for smokers. Then you can choose to be accosted in the street by aussie students and slightly sweaty blokes in bad blazers. Chugging isn't necessary, but as a clue, be polite if you have to. If I say no to your colleagues, don't be surprised when I tell you to FO for asking again.
I hate door knockers, and if I do answer I give them a couple of seconds to tell me they are sales then politely say no thanks just as I am shutting the door in their faces. I hope they stand there for a second not knowing whether to knock again. I don;t discuss charity donations with anyone because it just a gift, and nobody elses business. I happily give, but I carefully choose where it goes.
Must say that most charities that have been around for a while are good. A lot of outside funding goes into some, as part of many local and central government schemes. Legacies fund a great many too, so the admin costs are set off. The admin costs do have to be covered, and essentially whatever keeps the costs down must be good. But I wouldn't donate anymore by being pressured into it.
Macmillan Cancer Relief are a good exampple. Perfect charity, who I am very grateful to, but have to say not to ever give them any personal details as they exploit their marketing to pressure you into more donations, even when they say they won't. They have left a terribley bitter aftertaste for someone I would love to trust because they can't keep their fundraisers under control