That is terrible! I'm sorry this happened to you. People can be awful!
About 2 weeks ago my bank called and said my CC had been traced with a skimming device and they had to cancel my card and re-issue a new one.
IDK what a skimming device really is, but she said it's something these people can put in the machine you swipe your CC and trace your acct and card info.
I keep wondering how the bank actually knew it had been "skimmed" or whatever?! Anyways, glad they did!