A delivery wouldn't show up on your credit report. Something happened with it. Report it.
Maybe it's an innocent mistake, and you might waste some minutes on hold. If it's more serious, then it could cost you much more time, and money.
And, do you have your credit report frozen? It's free to do, now. Everyone should do it, like locking the door to your house when you go on vacation. Yeah, you have to fumble for your keys in the dark when you get back, but nobody wrecked your place while you were gone.