IndiGo — Refund due

I payed for for return flight from Kolkata to Goa on 1st March and Goa to Kolkota 30 March 2014. The card I used expired and so when I checked my bags in on 1st mech I was made pay for the flight again as I could not provide my card...this in itself is ridiculous ... Au wau is paid the full flight amount again at check in which was 11953 rupees. I was role bt the staff I would be refined we within 14 days . It is now 18 days later and still no refund. Flight no 6E345 and return flight is %E 343. Lindsey drunk is my name. Please email me in [protected]@hotmail.com I expect a reply and my full refund, Lindssu Druhan