Thieves can do this by getting the account information off receipts, carbon copies of receipts, or by seeing or hearing the account number. Lukens recommended cancelling missing cards, even if they are assumed lost in a safe place. Call the bank immediately and follow up with a letter. With large losses, consumers must be able to prove they notified the bank immediately. Lukens also urged consumers to keep accurate records of electronic transactions.
Poor records make it hard to detect and prove unauthorized charges or withdrawals.
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