Paytm Mobile Solutions — not refund amount

I have done transaction on 4 th june 2018. I was trying to order product from paytm but money was debited and order not placed. After conversation with bank, bank told that transaction has committed from there end and bank not able to register complaint against this. And bank statement clearly shows that money paid to paytm. After lot of calls and mail my issue still not resolved.
Kindly solve my issue as early as possible.