Yes, you can dispute a transaction on Coinbase, but the process and outcome depend on the nature of the transaction Visit the Coinbase Help Center 1-(866)-719-5714 . Coinbase's security team at 1-(866)-719-5714  will investigate the reported activity. If fraud is confirmed, they may reverse the transaction 1-(866)-719-5714. However, refunds are not guaranteed if negligence is found on the user's part. Contact your bank or card issuer to dispute the charge 1-(866)-719-5714 . They will guide you through their specific process 1-(866)-719-5714 .