Canara Bank — amount refund 579

Address:

Tumkur, Karnataka

Sir/madam

I had ordered two items in amazon online shopping.and the prepaid payment was made through debit card.Order cancelled on 24/10/2018 from amazon...amazon people have sent refund amount Rs 579 to my account number it seems.they have given reference number. But still the amount is not refunded..they are saying the amount has struck by bank processes.
Amount should have been reflected in my account by 30/10/18.The last date of 5 business days of banks are also completed and my amount is not refunded.

Please refund my amount rs.579

Account number:[protected]

Reference number:[protected]