Indian Bank — Not raising of charge dispute

I ordered a product from amazon on 22nd Sept 2021 and it got cancelled and they initiated the refund of amount rs 23990 on 27th Sept 2021 and I still didn't receive it in my bank account and they shared the refund reference number with me and said to contact the bank but the bank is not at all helping me to resolve this issue kindly please help me.
RRN:TRLUC9WL0000KTOSRV0S