I had a salesman knocking at the door, very polite but at the same time very pushy, even though you say you arent interested he would still push, im annoyed i made the mistake of giving my number, i have blocked it now, these companies fail to understand that if we need double glazing we are well capable of finding a company we know or that a friend has used, as do i already know where to get double glazing if i need it, the salesman will give you a sob story that if you agree to a quote his boss will be happy that hes doing his job, and that hes only been with them three weeks, all a big story.