Hii

You need not to worry about it because it is clearly stated in the FAQs Section on the official site that If the payment status of online transaction (by credit/debit card) is not communicated by payment gateway in real time then fee payment is not completed and the candidate will not be able to download the Confirmation page. In this case, the candidate is required to pay fee again through online mode and download the Confirmation page. The amount due to failed transaction of credit/debit card will be refunded back within 15 days after last date for filling online application.

So all you need to do is complete the payment once again and wait for the refund of the amount.

Thanks