Sorry you cannot get the money back.

As you got IIIT Bhagalpur in second round the amount will not be refunded .

You should have read the instructions given stating that you can get refund only if you cancel in round 1

https://www.google.com/amp/s/engineering.careers360.com/articles/csab-special-round-for-nits-iiits-and-gftis/amp