One on mine as well, but I had already paid it years earlier, but The Bon still showed it as an unpaid late payment charge. I had contested it because the payment wasn't late at the time it was made years before. I went to The Bon, told the CS agent that it was all BS, showed her my old statements where it had been paid and credited, and they wiped it off the slate. Don't know why their bill processing software didn't do that for them three years earlier...
I checked back with the credit reporting agencies to see that it was removed from the "negative" side, and it was. Bummer for you about having to pay yours again.
I am glad to hear you were able to resolve yours. I get too many neg stories on this w/o being able to bal it out with sucesses.