Msuniv.ac.in — exam fee

I paid the exam fee amount for the ms university on 03/10/2017. The transaction status is successful. But the amount is not reached the merchant end. Due to this i forced to repay the amount once again. So i need the refund with reference payment id :[protected]
Merchant transaction indentifier :[protected]yn0ufdpmwcef
Payu convenience fee : 25.28
Paid amount
840.28
Manonmaniam sundaranar university
Abishekapatti, tirunelveli, tamil nadu tirunelveli 627012, tamil nadu
Phone: [protected]