Should We Leave Voicemails at All?

The key here is understanding what you want them to get to. If somebody's talking slow, that's actually not a bad thing. That just might be how quickly they talk. But if they're hostile, one of the things you have to remember when you're in any sales call is that people respond or react in kind. There is a law of diminishing returns of everything in sales. Contrary to popular belief, I do not believe you should do 500 cold calls a week. I think that's a colossal waste of time.