Portronics — Not responding to my mail, phone for defective product i received

Address:	Balasore, Odisha, 756045
Website:	www.portronicsshop.com

I ordered a electropen3 from protronics official site with order id 4773647. i recieved a defective product for which i have mailed and called, but they are not responding.
First, they share a wrong tracking details, and unable to solve the issue after frequent calls. anyhow i recieved the product yesterday. but problem increased, when i knew that the receiver is unable to recognise the movement of pen that means the product is totally waste. but the seller is not responding to my calls and emails.