Domino's Pizza — regarding 30 minutes delivery guarantee

Address:

Domino's, MSX Mall, Gautam Buddh Nagar, Uttar Pradesh, 201308

I order pizza from domino's on 17 feb 2020 of amount rs 592. My contact number is [protected]. The order was delivered to me in one hour and when i asked the delivery guy about my refund he said dominos will refund your amount. I paid them through paytm upi. I contacted them but they refused to refund my amount and told me that they can provide me with a coupon worth rs 300. I don't want the coupon and i want my refund back as soon as posible because the order was not delivered in 30 minutes. I want my refund back or else i will take a strict action against dominos.