As a responsible financial consumer, it is crucial to understand the procedure for dealing with a lost or stolen card. In such an unfortunate event, the first step is to promptly report the incident to your bank. This will ensure that your card is deactivated and any potential fraudulent transactions are prevented. It is important to note that in case of a lost or stolen card, you may be liable for any expenses incurred during the period between the loss and notifying the bank. Therefore, it is imperative to act swiftly and inform the bank as soon as possible.