What Grinds My Gears...

One thing guaranteed to make me really snarky when dealing with Customer Service representatives is the phrase "Well, it says quite clearly in our Terms and Conditions..."

Translation : "Oh you are a complete dumb-ass, aren't you darling?"

Have you tried reading some of those Terms and Condtions?  Trying to find the right paragraph, subsection and sentence?  Honestly, it seems to be the one perk in an otherwise potentially soul destroying job, to smugly prove a customer wrong...

Grr.