oohh.. that is a great idea Heeven...!!
I dont find myself running into many rude sales/service people.
Probally because I am a chatty generally happy person anyways and before I even submit a verbal request for what I am in the store for.. Im gabbing away about something else.
An example-
I was thinking , about a year or so ago, that maybe having a part time job in a floral dept of a grocery store would be fun. Seemed simple enough and I do love plants..
So i took myself to an Albertsons store and had every intention of just filling out an application and being on my way. Well, I approached the older man who was the head of the floral dept and just.. started gabbing . Mostly about seed stock. When all was said and done, this man had shown me the ins and outs of the store, the dept, where they kept their seeds AND had given me 2 plants that were saveable, but not sellable..

No, he had no openings.. but WOW. he was an amazing ' customer service' person. No wonder he got that job..
And here I was, just a regular customer asking questions, probally not above and beyond the types of questions he got all the time, but he went WAY out of the way to help me.
Oh yeah, i absolutly agree 100 THOUSAND % there are ass hole customers everywhere. And they are probally the biggest reason that people in the service industry can be rude, short, and just all around butt-holes..