RBL Bank — Transaction failed but account debited

Respected Sir,
I made Electricity bill Payment on Amazon via Credit Card of Rs 290 on 30/08/2021, but the transaction was declined. My account is debited with Rs 290 and the same has also been generated in my credit card statement generated on 20/09/2021 and the amount has not been reversed in my credit card statement till now. The payment was hard declined and therefore transaction was not completed and Vendor (Amazon) is claiming that they have not received any money and therefore question of refund does not arise. Attaching herewith Email Attachment received from Vendor i..e Amazon
Kindly resolve the same at the earliest.