Amazon India — regarding amazon

I returned a product to Amazon which I bought using my canara bank debit card, Amazon has refunded the amount with the the refund reference number 74332740019001742596507 on 17th of January 2020, but it hasn't credited to my account still. I called to Amazon customer care number but they said that they initiated the refund and there's nothing to do from there side. Kindly look after my query