[Resolved]  Flipkart — prepaid order but asking money

Address:

Flipkart Internet Pvt Ltd Block B (Begonia), Ground Floor, Embassy Tech Village, Outer Ring Road, Devarabeesanahalli Village, Varthur Hobli, Bengaluru East Taluk Bengaluru District, Karnataka, India. PIN 560103

I have recently order JBL earphones from Flipkart.com and before placing order i made the payment as depicted in screenshot. But the delivery boy was saying that this order is cash on delivery. Flipkart is also not responding as i had dropped many texts on chatting portal and one mail. Both are unresponsive till now.
I have proof of payment...