Amazon India — My money has not been received

My account no[protected]

I purchased a product on amazon on 19th of August using my canara bank debit card same was not received and i asked then for refund. As per their confirmation refund was initiated on 24 th of this month maximum time frame was 5 days. Still it was not reflected in my account. They had provided the refund reference number as[protected]. I had contacted your customer service number they is no proper response hence i mail you. Please check and confirm the status of my refund.. Amazon customer care are saying its an error from the bank and not them..