I authorized someone I thought was a friend to use my credit card to pay her utility bill one time in an emergency. She understood that and agreed never to use it again.
Seven months later she started using it at some of the same places she knew I shopped, without my knowledge or authorization.
I noticed nothing at first, but later after checking through my receipts, which she knew I habitually do only every few months, I discovered a total of over $10,000 in fraudulent charges.
Now the police tell me they can't go after her because authorizing her once created the presumption she could use it indefinitely, no matter what we had agreed or how ridiculous the situation became.
Is this actually true? It's crazy and unfair if it is. It means you can't ever let anyone else use your credit card number without incurring liability for whatever they might decide to do in the future. This makes no sense and is something I think would not occur to many of us.