Punjab National Bank [PNB] — refund not credit in my account

Address:

Bagpat, Uttar Pradesh, 250611

On 24-nov-2018 i ordered ho laptop worth 39070 rs. But due to some issue i cancel the product and for that amazon india refund me the amount 39070 in bank account as same paid by me but i didn't get the amount back in my bank account and for this i contact amazon customer care they said the amount is already processed by them on 25 nov 2018 with refund reference no.443224 and told me to contact bank for the same and file a charge dispute for this but bank customer care and branch say they doesn't have this kind of option available now nor the bank customer service is helping not amazon plz help i want my refund back