Paytm — Company is not returning the purchased product

Address:	122016
Website:	Paytm

I have purchased a product called"Rugby Bluetooth speaker" from paytm app for rs 325/- .I have received it on 30 Jun'16.On the same day i found that its voice quality is not good as i was expecting.
So i have dropped a mail for returning the product and refund my money.But they are not in favor to return the product rather they told me to visit nearest service center. Unfortunately, i found that there is no service in Gurgaon and i again dropped a mail to return the product but they havn't revert me yet.

Please do intervene in this

Need your help in this.

Regards
Aanchal Sinha