National Board Of Examination — Regarding 2 times debit during application for degree certificate

My self dr sanket soni cleared dnb nephrology in 2022 dec.roll no [protected].
I have done payment of fees for CERTIFICATE dated on 18/09/2022.After payments receipt was not generated and amount was debited from my credit card.I wait for some days but still status shows fees unpaid . So I have done again payments dated on 02/10/2022 and payment was SucessFully processed and receipt generated.
After enquiring in bank I come to know that transaction dated on 18/09/2022 was processed and amount was credited to merchant account on 19/09/2022.
Below is the details of mail communication.
Dear Mr. Soni,

This is with reference to your query regarding the transaction of Rs.2, 529.50 on 18/09/2022 at M/s. National Board Of Exam NEW DELHI IN.

We would like to confirm that the aforesaid transactions have been processed successfully to your card account from our end basis the instructions received from the merchant. Details of the transactions processed to your card account are given below for your reference.

Posting date : 19/09/2022
ARN : ''74056632262226106282603
Auth code : 084764

In this regard, we request you to take up the matter directly with the merchant and obtain a copy of the credit voucher or a credit note from the merchant acknowledging the credit due on your card account. On receipt of the same, we shall liaise with the merchant bank for resolution. In the absence of these documents we will be unable to credit your card account for the above transaction.

We also wish to confirm that we have held the above mentioned transaction as disputed and hence further finance charges would not be levied on the card account with regard to this transaction until completion of investigation.

We would be glad if this mail receives your urgent attention and request you to revert to us by 07 days as there are certain time frames within which the dispute needs to be raised along with the above mentioned document.

Kindly note the query reference number for this e-mail is [protected].So I have done payment twice in your account so request you to check with your bank and provide credit note.So I have done payment twice in your account so request you to check with your bank and provide credit note.

So kindly look in mater and refund money asap