Food Panda — discount not given at the time of payment

Address: Gautam Buddh Nagar, Uttar Pradesh, 201301

Website: Foodpanda.com

I ordered food worth rs.508 from legacy of awadh and applied a 10 percent discount at the time of checkout after which, the bill and down to 468 inr. But when the order was placed, it showed that i had to pay 508 inr, which meant my discount coupon was not taken up. I paid up 508 and now i need my extra money back either in coupon or cashback. Thanks