Amazon India — Refund is initiated by Amazon Still not credited in my bank account

I am writing this email to dispute about the refund of amount Rs 1798 (Rs899 each)
against my order with Amazon.

The amount of Rs 1798 is required to be credited to my account by 26 th December 2020 and now it's 31st December 2020 and credit is still not appearing in my account despite various followups with bank and amazon customer care. Please help

Amazon representatives are saying that refund has been successfully initiated on 21st Dec 2020 for the total amount of Rs 1798 and the reference id is 5134040357029770846832
5134040357029770846832
The charge is stuck at bank end.

And then I contacted the bank customer care they're saying bank has not received any fund from Amazon.

Please do the needful as soon as possible.