Originally Posted by btcg
That explains it. Got a call from my Macy's AE, asking if I had tried to make a $770.00 purchase at Best Buy the previous day. It was refused, and the person fled. Seems they made a duplicate card, and tried a $1.25 purchase initally that went through. The $770.00 bounced. We killed the card and they issued me a new one. I had used that card at RD.
This is common practice with card companies now. I bought a gallon of milk once then went back to buy a gift card I had forgotten to pick up. All my cards were locked immediately (Visa and MC), and when I called in they said they were suspicious because of the small transaction 1st (what criminals usually do to test the card). When the bigger transaction was charged within a few moments, they denied the transaction.