Institute Of Banking Personnel Selection [Ibps] — Payment of 750 made via UPI

I have made a payment of ₹750 on 2 December, 2020 for SBI PO 2020 Examinations(Application No: [protected]). The payment was made through UPI and it left my bank account but this has not been updated in the system. I then made another payment via debit card and this payment has been updated and my application is complete but I have still not received any refund for the UPI payment made on 2 December, 2020.