Canara Bank — Refund not received to an account

Address:

Visakhapatnam, Andhra Pradesh, 531149

I am a registered user of canara bank. I have received a mail from amazon stating that refund for cancelled order amount 653 has been successfully processed on 16-jun-17 and it will be credited to your account. It's been four business days and i haven't received the credit. Please resolve it and credit my refund into my account.

The refund details are: authorization code for sale transaction 123668
Refund reference # 74332747167716685613507

Thank you