Indian Bank — I'm complaining about the refund issue

Address:	Chennai, Tamil Nadu, 600019
Website:	www.amazon.in

As i was ordered bluetooth headset for ₹310 in amazon online shopping and include 100 from amazon pay balance... But that product is damaged... So i replaced that and they said amount would be refund through your debit card in 3 to 5 business days... But amount is not refunded back... But when i contact customer service... They said that money is refunded back to your bank and they also give reference number for that transaction "your reference no is #[protected] for your amazon order" and also said that please contact ur bank customer service to initiate the refund.. And please refund and resolved it immediately