Indian Bank — no refund regarding

I have ordered a book and returned it because of its poor quality in amazon for which refund has been initiated by amazon but i haven’t received my refund yet. I kept calling amazon’s customer care for almost 3 weeks, and finally they suggested me for this charge dispute. Kindly, refund my amount as soon as possible, as iam so much concerned about the money for which i keep on approaching customer care which seems to be a burden.
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