My insurance company did a great job pre-approving me....but then my hospital mixed my information up with a different woman with the same name.
This very grim looking account administrator came into my room the day after my surgery and said she needed to discuss payment arrangements because "apparently my insurance rejected the claim, and we don't know how this happened, you were supposed to be preapproved"
By some stroke of luck, I happened to have my approval letter in my purse and got it out and showed it to her. She came back in half an hour and apologized profusely. Myself and the other woman with my name....our social security numbers were two digits off...8's, 3's and 0's (lookalike digits). It was a legitimate mistake....but man, did it have my heart racing for a minute!