Paytm - Return request rejected

Hi Team
I bought * piece men suit from Paytm Mall on * Dec ****. It was delivered on * Dec ****. Return policy says that it can be returned within ** days of delivery.
I placed a return request on ** Dec **** because the suit was defective and of very bad quality ; threads were hanging out, stitching was not proper, material used was rough and old , it seemed already used.
Paytm did not reply till ** Dec. Although I had been messaging/complaining them since ** Dec for pickup and refund of my hard earned money. On ** they said that return request is rejected because you placed the request after the return deadline ; which is false.
They also said your return reason was not valid.
This is my valuable money which is nothing to them. Also their customer care no. has no representative to talk to.
I therefore request you to please look into this matter and help me get my money back.
Thanks