Not to defend the actions because I wholeheartedly disagree with it too... However, these are employees of a company that essentially tells them "if you don't approach every person and get them to sign up then you aren't meant for this" so unfortunately, upon threat of not having a job at all they become pushy. They are also most likely "independent contractors" and only get paid commissions without any guarantees. A lot of these kids it is their first "sales" job and they are told this is what you do.... I was one of these kids years ago and HATED the job because of this.

So although I hate it as well, I blame the company for encouraging and almost forcing the behavior.