How to complain in NPCI for a wrong transaction?

To complain to NPCI for a wrong transaction, first use the 'Help' or 'Dispute' feature within your UPI application. If the issue remains unresolved, you can escalate the complaint to your bank. For issues that persist, file a complaint directly via the NPCI portal at or call their toll-free number 1800-120-1740 for UPI dispute assistance.