IDBI Bank — Regarding Refund money from Amazon to Bank Account

I have an order on amazon on 5 January 2021 amount 12, 843, in that amount 6, 597 has refund but, amount not came into the bank account,
I have already discussed with a bank and Raise against the check dispute form in that amount, customer care told me the number RRN:[protected] which you have given the wrong, and one discussed with amazon and merchants.
Kindly check into this matter and send money ASAP