Punjab National Bank [PNB] — Punjab National Bank - refund from Amazon is not credited in pnb account

Address:

Vill+ post--Deta khurd (Aligarh)

I got refund initiated of amount Rs. 2399 from Amazon on 1 October 2021 to my PNB account [protected] with refund reference #[protected] but the amount is not reflecting in my account as of now 12 days later. Calling Amazon they say I have to follow with PNB with the reference number, but PNB customer care says they can't help and I have to visit the Bank Branch where the account is. Visiting the bank branch is not possible as I am in another city far away from the bank branch. My contact number is [protected] Please call me any suggestions. Kindly help me.