Sounds like you've gotten good advice so far so no further input needed.

I have a couple of good to to stories for interviews if they come up. If you're end asked about difficult customer service issues, I fully expect you to talk about how you got stabbed in the face with a screw driver. As a kicker I'd end the story with how you still got 9's across the board on the survey the perp filled out afterwards, but that's just me.

Good luck