Debit Card Fraud Text Alerts Our service provider monitors debit card transactions for fraud. If a transaction on your card is considered suspicious, the the automated service will attempt to send you a text message alerting you of the transaction. Once you receive the message, you can reply with Yes or No, as appropriate. If you don't respond to the text message, the automated service will then call the phone number(s) on file. If no one answers the phone call, a voice message may be left on that phone with a callback number and case number. If you respond by phone, you will be asked to verify your identity. Additionally, once a potential fraudulent transaction is detected on your card, our service provider may place a temporary block on it to prevent further transactions.