If a customer needs to report a lost or stolen debit card with Peoples United Bank, they should act quickly to protect their account. It is typically recommended to immediately contact the customer service department of Peoples United Bank to report the incident. They can assist in taking the necessary actions to secure the account and potentially issue a replacement card. Additionally, customers may find useful information about reporting lost or stolen cards on the official Peoples United Bank website, including specific instructions and contact details. It is important for customers to monitor their accounts promptly for any unauthorized transactions and report those as well. The bank usually provides guidance on how to keep accounts secure after such an event.