Canara Bank — Where's my money please help me out

I order a product on amazon on 24th july 2020 using my master card debit card no: [protected] but i cancelled the order on same day. So amazon issued refund on 28th july 2020 and sent me
Mail of the reference number.
The mail is as follows:
Hello,

This is to confirm that refund for amount 799 has been successfully processed on 7/24/2020 and the amount should reflect in your account by now.

Refund reference # 30005402070206190801769

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.

For more details on refunds, please click here: https://www.amazon.in/pay/history?tab=refunds

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