Rajiv Gandhi Proudyogiki Vishwavidyalaya [RGPV] — I paid two times for exam form

I paid two times for exam form (Rs. 1300 + Rs. 1300) on 29 June 2020 and I still not received the refund of one payment. I paid first time on 29 June 2020 18:59:26 from billdesk through bhim/upi and the payment got stuck and my money got deducted from the bank. I paid 2nd time at 29 June 2020 19:03:52. I want the refund amount of Rs. 1300 to [protected]@upi or to my bank account. I'm attaching the screenshots of payment and my bank account statement.