Calicut University — I am complaining about the payment of my exam fee

Hi, I am Muhammed Swalih V. 2019-20 admission BA Economics student. While registering for our fifth sem examination (10/06/2022 Thursday)I paid exam fee 445 rupees through paytm.
(request came in paytm)but fee is not showing as paid.not getting receipt.please refund me that money.