Pepperfry — placed an order for 2900 but they charged more than 5000

I bought one chair from pepperfry just half hour back. The order total was around 2900 after applying coupons. After doing payment, they charged more than 5000. When i called customer care, they are saying that nothing can be done. I reviewed the order and it's showing 2 chairs in the order. I want the other chair to be cancelled since i never added it in first place. Also, the payment amount was showing around 2900. Still customer care is denying that they can't cancel it. Also, they refused to transfer my call to some other supervisor. Also, refused to create any ticket for it support team. I faced this problem while using pepperfry app. They have bluntly refused any help.

This is clearly a sign of fraud since i have been charged almost double of what was shown while making payment. Order no. #[protected]