I have!!!
I have some great stories. Got a white fox fur coat back once with makeup ALL on the collar. Lady claimed she bought it that way got very indigiant when I wouldn't take it back!
Got slapped once by a customer when AMEX had me confiscate her credit card.. (This was back in the day when you had to call for authorization)
One of my sales assoicates forged my name on a return slip for a $100 swimsuit cover up... I wasn't at work at the time, but did she think I wouldn't notice I couldn't figure out how I got a return when I hadn't sold one of the stupid things....(We wound up finding THOUSANDS of dollars worth of clothing at her and her best friend's house)
People use to try to bring back clothes they had been wearing for months, they claimed that when the credit dept called about thier past due balance they said you could return the stuff... uh yeah if it's not worn and has tags etc....
And my all time fav. One woman's cc wouldn't work. Called credit, they said her DH cancelled the card. She used the phone to call DH... He announces that he has filed for divorce and cancelled all her CCs. (Took a LONG time to calm her down enough to get her out of there)