[header] How to dispute bank charges [title] Gather receipts and statements. [step] You will need to provide the bank with proof of the error or problem with your account. [substeps] You might want to circle to highlight the error so it is visible. 
Make a copy of your receipt or statement that contains the error-don't send your original to the bank. For minor errors, you might consider simply calling the bank rather than filing a formal letter of dispute.