I can assure you I am not "the ginger guy"
I signed up because this sort of thing makes me angry. I have worked a door to door job before and it is very often that you get accused of being a con man! You forget that it is people's jobs to knock on your door and that they don't do it for fun or to try and annoy you. These people are at work exactly the same as when you go to work. These people are exactly the same as you but you treat them with a level of hostility which is entirely unjustified given that you know nothing about them.