The document is a dispute form submitted to Bank of China's credit card customer service center. The cardholder is disputing a transaction and requesting either a copy of the transaction receipt or to dispute the transaction. If disputing the transaction, the cardholder can either pay now and request a refund if not liable, or withhold payment until the investigation is complete and be liable for fees if found responsible. The cardholder is disputing based on unauthorized use of the card. They have enclosed copies of the front and back of the card and are requesting the disputed amount be removed until the investigation concludes.