Paytm Mobile Solutions — Product return / replacement fooling

Address:	411057
Website:	www.paytm.com

Hi all,
I have order a protein product cost 3500 rs. The product was delivered with seal broken and half of the protein powder lying outside the box. How i can take trust the broken seal and unpacked health care protein.
I reported the issue but without clearing the issue they send the mail as per the return policy seller denied to return/ replace the order and closed the issue.
I have replied with all the seller return policy proof with the screen shot. But now from 2 days no one is assisting my call and no one replying.
Please find the mailing proof and the screenshots.

How can i trust on the seal broken powder.
Please help me in raising this issue.

Thanks,
Pranay