Amazon India — Refund processed but Not reflect in my account

I have ordered 2 redmi 9a from amazon on 25th june with two different card. They cancelled both and initiate refund on 26th june. But I got refund of one transaction.
And whenever I am asking them to provide me the UTR number they gave me the RRN of another transaction which refund I already got in my card
They just misguiding me everytime
My order ID of which refund I got is[protected] and RRN is 75503721177049033117598.
Whenever I am asking them the RRN no. Of this order Id[protected] they send me the same RRN.
How two different transaction with different bank have same RRN. Please help me