Myntra.com — No return request initiated for defective product delivered

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Myntra has delivered defective Philips hair straightener. On initiating a return request within a return window, they are not accepting a return saying go to brand support for the repair.
When Myntra has delivered something defective they return it, this is the policy which is clearly mentioned. Still they are not returning. Attached is the invoice with order details and return policy screenshot on the product.