Amazon India — About refund from amazon

I ordered a book, as it is damaged, i returned and opted for refund, they were saying that refund is issued but there is no amount credited in my bank account. they are saying to contact the bank, we have no problem we did the refund. i asked bank and even said my refund reference number and there is no such amount credited. there is a option called amazon pay there all the transactions will be there. but there is no refund issued. i, m attaching the screenshots. kindly look into the issue.
my order id is[protected]
refund reference number is[protected]

this is the exact mail id from them

" thank you for contacting. i'm ved from amazon customer service.

this email with regards to inform you that i'm writing to follow up on our conversation about the refund of your order #[protected].

our billing team has confirmed that we’ve issued a refund to your original payment method / bank account for rs.295.00 on 19 july, 2020. the amount should reflect in your bank account statement or credit card statement after refund date + 5 business days.

the reference number for the refund is[protected].

for bank account refund confirmation, you can contact the bank’s customer care with this reference number for more information about your refund. "

bank customer care is saying that there is no such refund from amazon.
I'm attaching screenshots