Foodpanda — Having to pay twice for the same food order.

Address: Hyderabad, Andhra Pradesh, 500096

Website: foodpanda

I ordered food from an outlet called paccomeal through food panda, and made the payment through paytm. after the payment was made, (confirmed through sms by both my bank hdfc and paytm, food panda didnt confirm. i had to pay again, and then the order was confirmed by food panda. they said when i called them that they only recieved the payment the second time. how do i get a refund?