Amazon.in — Refund not initiated in my account

Website:

amazon.in

MY REFUND WAS PROCESSED 40 Rs. on[protected].
REFUND REFERENCE NUMBER FOR 40 Rs. is 30005110081008104722875.
This amount was credited as per the details mentioned above but it is not reflected in my account when I have contacted customer care of PNB but they denied to help.
Kindly check and let me know where my refund is stucked.
My contact number is [protected].
My name is DHARMENDRA KUMAR GOND.