No the real mistake was thinking you could haggle with service-level employees at a multinational company. That's the dumbest thing I've heard in a while.
My fiancee has managed to swing deals in many big retail chains - it takes a little persistence, and the ability/desire to walk away. even if walk away means walking out the door, waiting 20 minutes, and coming back to get a different sales guy.
She's Chinese, and says that white people are nuts for paying full price ... and I've seen that it's true. Just asking a simple question ("Can you do anything on the price?") has saved us hundreds of dollars (or gotten us lots of stuff thrown in).
I'm a convert, but I still have a hard time with it. I look at the price tag, decide if I can afford to pay that, and buy it if I can. She looks at a price tag and sees a challenge.