Food Panda — regarding refund

I ordered something from food panda about 10 days back. They were unable to fulfill the order and also made me wait for the order for about 2 hours and then they canceled it.
It's been about 10 days and i still did not got my refund.
If i contact the customer care through chat, i don't get any response as after one response, my chat box is disabled and their representative leaves the chat.
They don't have customer care number and hence i am unable to contact them in any manner.