Would you stick your foot in the way so they couldn't close their door, as well? If so....maybe you should feel threatened, as I sure as hell would feel threatened if a stranger did that to me at my own front door.

Those handy "No Soliciting" signs go a long ways to notifying those fucksticks that they aren't welcome.

And back on topic...Hell no, I wouldn't pursue a mortgage from a door-to-door dude.....nope.