HDFC Bank — Cashback not received on debit card.

Address:

HDFC Bank , RG Complex, Plot no - 4 , DDA Community Centre, Sector 9 , Rohini , New Delhi - 110085

I had made two transactions on which i am entitled cashback but more than three months passed but bank did not send me the cashback.
I have also attached the receipts which prove my claim for cashback.
Please resolve the issue as soon as possible, so that i can receive the cashback at the earliest.
Transaction date[protected]
Transaction no - 3fcb05625ff42919, 0d158528ab9c84d9