Indian Bank — amazon refund amount not credited

Address:

s.no 46/6/15 telco society dattangart katraj pune 46, Pune, Maharashtra, 411046

I have orderd an samsung m30 on amazon but due to some reasion i have cancel irt and for this order ihave paid 14990 through debit card of indian bank and when i have cancle this order amazon refund money on 7/4/2019 but till datethat money is not ceradit in my amount when i have asked am, azon provide tranasition ad is[protected] and send inquary in bank but bank deany
what can i do in this case