Amazon India — Product Not received, Unable to Cancel the product from my end and from the Customer Care end

I have ordered Tusa Wireless Handheld Vacuum Cleaner (3, 399 Rs) from Amazon India on 15th Feb'23 which was expected to be delivered on 16th Feb'23 but till now the product is not delivered. Neither is an option available to cancel the order, contacted customer support nearly 10 times till now, and they are even unable to cancel it from their end or initiate a refund.

I want the refund amount to be processed to the original payment method ASAP.

Sadly, no one knows how to get this closed and initiate a refund. Everytime they close the call stating ticket is raised pls wait for 3 days.
and this keeps on continuing we wait for 3 days and then call again and again and again. sharing the mail of ticket shared by them.

I'm a prime member and have ordered hundreds of items from Amazon till date and this is what you can do??