Indian Bank — Refund initiated Amazon but not received the money in my bank account

Address:

Brigade Gateway, 8th floor, 26/1, Dr. Rajkumar Road, Malleshwaram(W), Bangalore-560055, Karnataka, India.

Dear Sir,
I have ordered an Oppo F17 Pro on 9th February 2021 .
It was to be delivered on 9th February 2021 but due to some issues the order was cancelled and the product was filled for return.

Amazon initiate the refund on 14th February 2021 and it was supposed to be credited on 19th february 2021.

Amazon gave me this reference Id
Refund Reference # 74332741046104518606305
but the Indian Bank has still not credited the money to my bank account.

The amount of refund is Rs 21, 640

This is urgent please help me as soon as possible.

Thank You