https://www.devex.com/people/how-do-i-dispute-a-coinbase-transaction-fast-track-help-2415179
To dispute a Coinbase transaction, you can start by contacting their customer support team for assistance. You may call Coinbase's support number at +1-818-436-0005 to report the issue and provide details about the transaction in question, such as the date, amount, and reason for the dispute. Be prepared to verify your identity and account ownership for security purposes. Additionally, you can submit a dispute request through the Coinbase website or mobile app by navigating to the Help section +1-818-436-0005 and selecting the option related to transaction disputes. Ensure you provide all necessary documentation or evidence to support your claim, such as receipts or communication records. Coinbase’s team will review your case and work with you to resolve the issue.