Indian Bank — about refund amazon

My name is akshay naik from kunnur karnataka pin 591215
Recently i have order a bag online through amazon. So i return the bag which has
Return policy. I have not received refund yet please help me useing the details given below
Date of order: 04/08/2019
Item ordered: safari 40l red laptop backpack
Return reference number :[protected]
Bank name : indian bank nipani
Account number : [protected]
Ifsc code: idib000n040