Domino's Pizza — Order delivered after nearly 1 and half hour

Address:	Solan, Himachal Pradesh, 173205
Website:	pizzaonline.dominos.co.in

My order was placed at 8:16
And it was delivered at 9:45. Payment was done through online transcation so i want to know how i will receive 300 discount as promised by sale outlet. Will i get my refund same as the payment mode or anything else?

Customer name-sanchit anand
Phone no-[protected]
Dominos store name-dominos baddi
Date of incidence-9/5/2017
Order no - (If possible)-116
Bill no - (If possible)-dpi66190