Nimionlineadmission.in — amount debited but receipt not generated by www.nimionlineadmission.in exam fee

Website:

www.nimionlineadmission.in/2020

I have made payment through phonepay upi rs.500/- online via www.nimionlineadmission.in website for cits online admission exam fee payment date :-27/06/2020 time :-5.27 pm.
Transaction id - hdf94c1364b5b5d44eb9aab9605391ac5a1
After successful debit from my account, i was directed to www.nimionlineadmission.in for viewing payemnt receipt. However at this stage it showed that gateway timeout and hence no receipt for tax payment.
After that i pay again via sbi netbanking through payment rs.510/ - online via www.nimionlineadmission.in website for cits online admission exam fee payment date :-27/06/2020 time :-5.33 pm.
Reference no. Igaiwayqm6
After successful debit from my account, i was directed to www.nimionlineadmission.in for viewing payemnt receipt. However at this stage it showed that payment was successful.
Kindly refund money.