Its the window sellers I like...
Seller: Hello, we are in your area with a special offer on double glazing
Me: But, I already have double glazing
Seller: But these are wooden windows
Me: Yes
Seller: Well plastic windows are better insulators.
Me: No there not, plastic is a much worse insulator than wood.
Seller: But, you dont have to paint plastic ones.
Me: Correct but, these only get painted every 4 years and when done they are painted well so they last well.
Seller: Well you would save the cost of painting.
Me: At the cost of 5K plus for some plastic windows poorly fitted by you lot that dont look so good in order to replace my windows which have more detailing and currently have no faults on them?
Seller: I take it your not interested.
Me: I take it you dont know anything about windows....
And dont even get me started on energy salesmen..........