Mahesh — Regarding refund not credited back to my oriental bank if commerce kopp

As the amazon has already refunded the amount of rupees 309 but its not been credited to my account and if I ask them they are saying to ask the back with quoting a reference number so the refund reference number is attached below please credit the amount to my bank account...

[protected] this is the refund reference number
Bank name OBC koppal branch.. 583231..