Amazon India — Renew of prime membership amount

I have received a mail to today stating the following
"Your Prime membership ends soon - Renew early and pay only Rs.999 899 for another year of Prime. Continue enjoying uninterrupted Prime benefits."

I have immediately renewed
"Order #[protected]
Placed on Wednesday, June 30, 2021
Item Subtotal: Rs.999.00
Order Total: Rs.999.00"

You have promised Rs.899/- but charged Rs.999/- I request you to kindly return the extra amount you have deducted from my account at the earliest