They incorrectly billed us over $2000. We argued with them and they reversed the charges - twice.
So now my balance showed a credit of $2000. I kept calling them back and they said they couldn't see anything wrong on my account.
This went on for months. A number of times the person on the phone said "Well just don't tell anyone!". I asked for that in writing and then they sighed and said "I'll put a note in for someone to look at it."
I was blown away by how many friends of mine got mad at me for trying to fix it. Does anyone really think this would go unnoticed forever?