Paytm — Courier charges not paid to me for return order

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www.paytm.com

I have received damaged product i.e.Zakozee Melamine Dinner Set (Set Of 32 Pcs) from paytm on dated 27.08.15, order no:[protected].So as per PAYTM instruction, i returned the same product, which is received by seller and POD for the same i have been sent to PAYTM.Refund for the same return product paid to me by PAYTM, whereas courier charges(Rs.660) for the same return order still not paid to me.I have contacted customer care of PAYTM four times to resolve my problem, also mailed to PAYTM four times but there is no response from PAYTM regading the same.So please help me to solve my problem.