To refund a wrong transaction on PhonePe, immediately contact PhonePe customer support:077976✓64330 through the app's "Help" or "Support" section to report the issue, or use the in-app transaction history to raise a complaint directly against the specific transaction. Provide all relevant details, like the transaction ID and date. If the issue isn't resolved by PhonePe, the next steps involve contacting your bank to file a dispute or escalating the complaint to the Banking Ombudsman, as a refund depends on the recipient's cooperation.