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Your purchase triggered fraud protection
Besides international purchases, certain "suspicious" activity can lock down your credit card. Purchasing items such as large electronics or jewelry may raise an alert.
"Credit card issuers lose millions to fraud every year, so they're very sensitive when your spending pattern changes," says John Ulzheimer, a nationally recognized credit expert.
That's not to say these indulgences are off-limits to your credit card. You can still splurge on that diamond necklace -- just call your credit card company and notify it of your purchase.
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