Fifth Third Bank has told potentially thousands of credit card customers that it inadvertently reported to the credit-reporting agencies that the customers had filed for bankruptcy, the Columbus (Ohio) Dispatch reported today. The Cincinnati-based bank said yesterday that it has sent letters to what it called a “limited number” of customers who the bank said were affected by the reports. The bank said that the error has been fixed and the affected customers shouldn’t notice any change in their credit scores. The bank also said it is working with customers individually to resolve any issues.