Domino's Pizza — I'm complaining regarding my refund which I haven't received yet

Address:

Fun mall lucknow u.p.

Sir i was at Domino's outlet at fun mall in lucknow on 31st aug and i had an order DPI[protected] and i paid using Paytm (screenshot is attached with this mail) but i was told that the Paytm wasn't received by them and i have to pay them in cash instead, i was told that i will get my money back within a day or two but I haven't received it yet...please help