HDFC Bank — My refund is processed successfully but not show in my bank account

Address:

AT-PO-FALU,TA-VIJAPUR,DI-MAHESANA, AT-PO-FALU,TA-VIJAPUR,DI-MAHESANA

My name is Raj Patel and I had ordered one plus bullet wireless z of RS. 1999 one plus bullet wireless z in Amazon on 30 december 2020 and after 6 january 2021 I returned this order due to personal reason. And on 9 january 2012
Amazon initiated the amount to my card but I still didn't get the money. Amazon sent this reference number 30005410100365124656462 and told me to fill charge dispute form but Indian Bank doesn't have such policy. So
please kindly respond to this complaint it's very urgent. My card number is [protected]
Thanks you sir