Paytm Mobile Solutions — Cashback not received

Address:

Chandigarh, Punjab, 160022

I bought a coupon as available on the paytm app as to 100% cashback on payment at petrol pump using paytm, the coupon read maximum amount of refund rs 1000
i made the payment using the app and as per coupon's requirement there was no code to be applied,
cashback was to be recieved withing 48 hours but after waiting for the cashback nothing happened .!

i mailed them the complaint and they had the automated reply like answer, you will get cashback as per the procedure using coupon code .! Till tome they haven't replied to my another message