Indian Bank — samsung m10/ I am complaining about an issue with the refund from amazon on my order

I have ordered a phone and had to cancel it on the same day and amazon has issued the refund on the same day itself i.e. 7th April 2019. The refund has been done from Amazon's side and we still did not get the refund and it's been more than 10 days ! Refund ref no '[protected]'. I contacted Indian bank customer care service also but there was no help. Please look into the issue and credit my refund amount into my bank at the earliest.