Canara Bank — refund initiated by amazon is being delayed by canara bank

Hi,
I am Mufeeda M M.I purchased a phone from amazon for Rs.15999 on 25th August 2019 through UPI platform using my canara bank account (account no.[protected], shornur branch).Two days later I cancelled my order since the price of the phone got dropped again.Then amazon initiated the refund on 31st august 2019.The final date to receive the refund according to amazon was 6th September 2019.When I contacted amazon they asked me to contact the bank's customer care.I called them and they told me that the refund was not initiated by amazon.I provided them with the refund reference no. also.

Then I contacted amazon again.They asked me to file a charge dispute form.I again contacted the bank's customer care service, then another staff told me that it may take around 45 days to get back my refund.I waited for 3 more days to get back my refund but the bank is still delaying it.

I don't know why they are delaying the refund amount to get reflected in my account.

I need the money as soon as possible to meet my family's expense.

Please help me with the same.

I'm quoting the mail sent to me by amazon confirming me about the initiated refund.
Hello,

"This is to confirm that refund for amount 15999.00 has been successfully processed on 8/31/2019 and the amount should reflect in your account by now.

Refund Reference #[protected]

Please contact your bank’s customer care center and quote these numbers to know further about the status of the transaction in case you still haven’t received the credit within 4 business days. Please remember that you will have to call your bank’s customer care center and not visit the branch for this update.

Some nationalized banks may take more time than normal to credit the amount. If your bank is unable to locate the refund with the reference number provided, please dispute the transaction as 'refund not processed'. At that time, they will see a pending refund and will follow the path back to our payment processor to locate the refund.

Thanks for choosing Amazon.in"