How can I complain to Myntra online? Customer you can also call on Myntra helpline number✅ (( 083888-10639 )) 9424-129×923customergrievance@myntra.com (Language: Hindi and English). Open the Myntra appIn case of any query or complaint the Consumer can approach us and reach out to us through "Contact us" tab available on the Myntra page. If your query / complaint is not resolved and needs to be escalated.