Canara Bank — refund on amazon

My name mohammed safique and my account number is[protected] canara bank madikeri main branch. I have canceld a product in amazon for rs 6843 and they mentioned that my refund of amount rs 6843 has been initiated on 04 january 2018 and it will be credited to my account on 08th october 2018. Till now (09th january2018, i didn't get my refund to my account. I have received a refund reference number (443160) through mail. These are the messages received from amazon

Your refund of rs.6843 has been processed successfully on 2018/01/03 17:25:00. The amount should reflect in your account by 1/8/2018.

The authorization code (Refund reference number) for the transaction is 443160.

In case you do not receive the refund within 5 business days, please contact your bank’s customer care and mention the above authorization code (Refund reference number). Please remember that you will have to call your bank’s customer care center and not visit the branch for this query.

Some nationalized banks may take more time than usual to credit the refund. If your bank is unable to locate the refund with the authorization code provided, please dispute the transaction as 'refund not processed'. On disputing the transaction, the bank will see a pending refund and will follow the path back to our payment processor to locate the refund.

Hope this helps. Thank you for choosing
Refund of 6843 processed successfully. For delay over 3 days, contact bank with ref # 5150003011436951703067 & charge auth # 443160. Check email for details.