Corporation Bank — refund not received [ reference number :[protected] ]

Address:

Shuklana Pura, Mahoba, Uttar Pradesh, 210427

I ordered a watch for 520 rupees through upi on 2nd march 2020. And i cancelled my order as i made that order by mistake.
My 25 rupees of amazon pay balance was returned to my amazon pay account but my abstain 495 rupees was not returned to my corporation bank account.
And amazon agent told that your refund was sent to your bank account on 4th march and wait for some days and said it will reflect to your account till 14 march 2020 but i didn't received my refund.

And they told that amount is sent to your bank account but bank did not processed your amount.
They gave me a reference no. [[protected] ]
They told me to file a dispute form
So i wrote this.
I'm very worried for my money as i contacted several times to amazon and corporation bank customer care services.
Kindly i want to send my money back to my original account.