Paytm — Paytm did not provide the Cashback that was mentioned in the Site.Its been over 12 days and no reply from their team for the error

Address:	560045
Website:	paytm.com

I wanted to buy a shoe with Product Code : FOOLEE-COOPER-BSREE[protected]BBA77 .
It was mentioned that the product had a 40% cashback on purchase.
When i tried to see the offer promocode it was not available whereas it was mentioned clearly in the product thumbnail that 40%cashback would be offered.
I raised a complaint on this to the Paytm on July 13 with ticket no is 04400949.
They had told that the issue would be resolved within 48-72 hours .Its been 12 days now but still i dint get any response from paytm even after sending the reminder mails to check on this issue.