State Bank Of India [SBI] — Flipkart refund is not credited to my sbi account

Address:

Gurugram

I have purchased a Nike NK Tanjun Men running shoes for rs. 2876/- on 19.12.2022 and due to Price drop from another website the same has been cancelled from my side on 19.12.2022 with refund initiated on 25th march 2022.
They said that the refund has been done by sellers stating that:
"below are the details to confirm that the refund has been successful:

Order id-OD[protected]
Payment reference no: OTHPG540933
Refund date :25th december 2022,
Arn: 75503722360020624626854
Payment mode: Sbi Debitcard"
Sbi Account number-[protected]
Branch-Nangloi, delhi

And ask me to contact my bank, the amount is still not reflected in my account, i have contacted multiple times to flipkart, they gave me every
Time the arn number and ask me to contact customer services
To trace the amount, but my sbi bank says myself should contact flipkart as they do not find those reference number or arn valid to trace from bank branch. Please help me out of this, do the needful to credit the refund to my account.
May be the transaction is pending please clear this