Paytm — i got defected piece of Hyundai 21600 mah power bank

Address:

Faridabad, Haryana

Paytm Order No.[protected] Paytm Shipment ID.[protected] I order a Hyundai 21600 mah powerbank from paytm and Guru is its distriuter. I got defected piece of Hyundai 21600 mah power and its not working or not charging my phone. The powerbank is not charging itself. How do return my hyndai 21600 mah powerbank and also get my refund of my order.