Refund of GST

ANJANI KUMAR (INTER+CPT) (115 Points)

26 March 2018  
A registered person had paid tax and penalty on detention of vehicle by proper officer due to some reason ..

Hence in electronic cash ledger CGST,SGST, PENALTY amount is there from December 17 on wards...
it is not adjusted due to conditions specified in electronic cash ledger...

How to claim refund of above amounts?

thanks in advance