Syndicate Bank — disputed amount never processed in saving account

Manish srivastava having saving account [protected] in kanpur u. P. I have ordered a mobile and then cancel that due to some reason on amazon portal. Amazon processed my refund of rs. 8998.0 on 15 september 2017. But my amount is not back in my account. I have contacted to amazon customer care for last 4 days continuously they replied following —

Usually the refund gets credited into customer's account in 3-5 business days but as you did not receive the refund even after many days, i request you to please contact your bank’s customer service (Phone banking) department and mention the refund reference number and i'm really positive that you should be receiving your refund for sure..

If your bank doesn't provide the refund confirmation, please dispute the transaction as "refund never 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.

Refund details are: —

Reference number : 74332747259725889332755
Refund date : 15 september 2017 4:32 pm
Refund amount : rs.8998.00

I have previouly send you email on dated 22/09/17 but i have no any reply from your side. please sir take this mail as my request and solve this dispute amount.

Thanks!

Manish kumar srivastava
A/c no - [protected]
Branch - collectorate compound court campus, kanpur, up
Mobile - [protected]