Indian Bank — redmi 7 pro phone refund from amazon

Address:

Pg women's hostel, Kurnool medical college, bhudhawarpet,kurnoo, Kurnool, Andhra Pradesh, 518002

On 18/11/2019, i have ordered redmi 7 pro mobile on amazon later i have cancelled it. They messaged me that refund will initiate in 5 days. But i didn't get the money. I have called amazon customer care. Amazon service gave me one reference number-949320 regarding this. I have already approached indian bank branch office they told me to file complaint here. Plz kindly look into this.