OYO — OYO didn't refund my money

Hi this is to inform you that my name is Kaustav Dutta and I booked an OYO room through the OYO app . My booking was for 2nd August and I payed Rs 966 through the app. My booking I'd was F4GW3746.
But after cancelling the booking before 9am 2nd August I am supposed to get the refunded money back in my account. But still I didn't get any money back in my account though in the account it is showing refund successful.