It's a hard line to balance on...depends on what industry it is for me. I can't do residential fuck that no way I'm bothering people at their homes. The only time when I pressed people is when I had a solution to a problem they had and wouldnt respond at all (had a case of this happen to a BIG company in CT and since they never took my call it fucked the company up and got the CEO fired) so there is some validity to needing to pick up those calls at some point). Sort of like that comic where they are pushing a square wheel saying "IM TOO BUSY" while the guy is offering them a circle wheel. It's a battle of ignorance I deal with on a daily basis. But with that being said, alot of sales people can be ignorant too.

Also too I like to use as a reference is "why did we go through the industrial revolution? Because someone eventually said there is a better way to do things and people listened."