Dealing with a crazy customer

[prodrying]

We had a lady bring in a small rug to be cleaned at our rug cleaning plant. As we do with all rugs we photographed the rug right when it came in. All the photos are also date and time stamped. When she comes to pick up the rug she tries to tell me that we unraveled the sides of the rug in two places. I proceeded to pull out the photos and showed her that the rug was like that when she brought it in. The photos are date and time stamped and she is actually in one of the photos. She proceeded to pay, but the entire time she is telling me I am lying and that I doctored the photos, etc. She even leaves and then comes back to complain some more. All this for an inexpensive $100 rug.

I can only imagine the trouble I would have had without the photos.

So what's your best crazy customer story?