Indian Bank — Tac 15% vitamin c serum refund amount is not received into my bank account

On 31st December 2022 I ordered tac 15% vitamin c serum on Amazon. Then I received product on 2nd January 2023 but they send wrong item so i contact customer care to refund my amount. They said your amount will be refund on 10th January 2023 on your bank account. But i didn't receive any amount in my bank account. Again I contact Amazon customer care they said we initiate your amount to your bank and they gave reference number IDBI bank[protected] but still now I didn't receive my money so kindly take step of my complaint. Thank you