Flipkart — Flipkart says payment is pending while my credit card says payment made

I order few items from Flipkart - Flipkart says payment is not confirmed by the bank. My credit card company (Barclay) says payment was transacted on Sept. 7 and I have already found on the list payment was made.
Not understand what Flipkart says - the fact is that the order placed has not been fulfilled. Now I cannot even cancel the order. There is no place in the Flipkart for customer's complaints. It appears to be a dead-end road. Hence Customers be ware. Unless they improve their website it is useless.
A warning to all - do not use foreign credit cards to pay Flipkart since it takes forever for transactions.