Amazon India — Payment deducted twice for same product

I paid via a WhatsApp link that was shared by the delivery partner of Amazon. I paid but he said the payment has failed on his side and on his insistence & as per confirmation from an Amazon representative, I paid again. They said since initial payment failed, the bank would give my money back. Now, its been 10 days and Amazon says the bank is responsible and bank says Amazon is responsible. No one from Amazon has helped and did nothing but waste my time & take my money.

Horrible people & experience.