Indian Bank — refund for the cancellation

Address:

Chittoor, Andhra Pradesh, 517432

I have ordered an item in amazon and later it got cancelled... As per the amazon customer care they have refunded the amount to indian bank on 27/04/19.
But till now i didn't get refund... I have complained an filled the charge dispute form.. The status of the form is completed but i didn't get my refund... Please solve the problem as soon as possible... I have tried talking to the customer care service of indian bank... They are just telling to complaint in charge dispute... The complaint reference number is ibcw[protected].