There are charges on my credit card I don’t recognize. What do I do? To report an unrecognized charge, call the number on the back of your credit card at your earliest convenience. Alternatively, you can dispute the charges online through Alliant online banking. First, select your Visa card from your list of accounts. Then click the “Manage Accounts” tab, select “Dispute Transaction” and follow the prompts to identify and submit the specific transaction(s) you want to dispute.