If a cardholder suspects fraudulent activity on their account, what should they do?

When a cardholder suspects fraudulent activity on their account, the immediate response should be to report it to US Bank and their Approving Official. This action is critical because it allows the financial institution to begin an investigation and potentially mitigate further unauthorized transactions as soon as possible. Prompt reporting can help in monitoring the account for any additional fraudulent activities and in protecting the cardholder's financial interests.

Waiting for the next billing cycle can lead to additional unauthorized charges and complicate the situation, as the cardholder could end up liable for expenses incurred after the initial suspicion arose. Changing the card PIN might be a good security measure, but it does not address the root issue of already suspected fraud. Contacting a financial advisor, while it may provide financial guidance, does not offer immediate assistance or action specific to the fraudulent activity concern. Therefore, reporting the issue immediately is the most effective course of action.