This happened a few years ago when I worked in a bead shop. We did jewelry repair too. Mostly simple stuff like reattaching clasps, restringing beads, or pearl knotting. Occasionally, when we weren't busy we would do repairs on the spot. Our minimum charge for any repair was $4 plus the cost of the materials.
So one day a lady comes in and she needs this necklace repaired ASAP because she wants to wear it that night at a dinner party. I saw that the necklace just needed the clasp reattached, which is something I can do in under a minute. I told her the store policy and said I could fix it for her while she waited. She seemed cool with that, so I grabbed a jump ring and reattached the clasp for her.
I rang her up and she took her necklace, leaving without a word.
The next day we got a call from the lady asking to talk to "the manager". She told the bead shop owner she was upset about having to pay $4 for the jewelry repair because I fixed it in under a minute. Her words, "Last time I checked only doctors made $4 a minute."
It's something you didn't know how to do lady. I did it quickly because I've done it five hundred and sixtytwo million times. If you didn't want it fixed professionally then do it your damn self.