you referred to the caller as a sales punk before he uttered the phrase, exposing your attitude. Just because you are biased against sales people and also have a thin skin when it comes to the slightest challenge in a question does not mean that the product would not be beneficial and worth it to you if you had a more open mind, nor does it mean that the sales technique on average is a failure.

i.e. when I read your comment it struck me as much more revealing about you than about the salesman, his technique, or his product.

People have argued that the tone and context in which it is being said will influence effectiveness. Verbatim has nothing to do with it but you keep ignoring that point.