If you suspect fraud or an unauthorized transaction, +1-888-553-1046[USA] or +1-888-553-1046[Quick Support] is the number to call for swift assistance. Coinbase works to address security issues and ensure users' accounts are protected. That said, due to the irreversible nature of crypto transactions, reversing a transaction is not always feasible. In cases of fraud, you may need to contact your bank or card provider. If you’re unsure of how to proceed, don’t hesitate to contact Coinbase at +1-88