SilentOne answered Sunday February 11 2007, 6:02 am: In addition to Sabine's answer; (yes, call your card company, good advice)
I presume that they were using your card number without a signature, either as a shop person, or using it on the internet, which doesn't require a password.
If that's the case, the card company will be able to trace where the transaction was made, or what computer it was made from, and investigate. If it's fraud, they will probably give your money back. They should have measures in place to detect unusual buying behaviour anyway. Those freeze your card after a few purchases.
Sabine answered Sunday February 11 2007, 1:28 am: Immediately call your credit card company. I believe that federal law in America limits your liability for fraudulent use to $50 or something and your credit card may have other provisions. You can prove it by asking the company to retrieve the slips that were signed and comparing them to your signature on file. But call the company right away and get the credit card number cancelled.
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