Paytm — Product has been returned one month back still amount not refunded

Address:	560016
Website:	Paytm.com

Purchased a trimmer through paytm and made payment through Cod and returned same product as it is not working condition and it is used one. After returning the product raised plenty queries and contacted many times to there customer care service but they are not refunding the amount paid. This is happening from last one month.