All India Institute Of Medical Science [AIIMS] — Online Payment Error

Payment made for AIIMS MBBS 2017 course for student ID [protected] vide State Bank of India Debit card on 10 Feb 2017 with reference number POS PRCH POS[protected] MOPSBIDRCARD SBIPG. The amount has been debited from my account, however, I have not received any confirmation. I am also not able to proceed further. When I am trying to make payment again the following message is being poped up "A payment has already been made for the same reference number. Your request cannot be processed". Request kindly advice as filling up of form is held up.