Thanks for all these stories. Really funny.
Question - How would you react to this situation? I have encountered these kind of sales people before and I really don't want to be nasty at the same time because they are just doing their jobs and doing it to the best of their abilities and with what little training they have.
I think we need to subtly educate them in a way that it does not bruise their ego and we may even get a good discount in the end. I know these people are appreciative of customers who can share information that they can use in future. The question is how do we get what we want but in a nice way?