Zomato — refund paid money for which was not delivered

Address:

1193, sector A, pocket B, Vasant Kunj, New Delhi, Delhi, 110070

I ordered the food paid by Paytm but food was never delivered to me because Zomato says they tried to contact me on the phone I did not respond so they cancelled the order and they did not refund my money. I requested them on chat and via email but Zomato did not agree to pay me back my money.i told them that i may be in the bathroom or any other important call that time., May be the reason to not to pick up the call but Zomato has my address so they should deliver the food on my doorstep but nobody helped me to refund my amount which Zomato illegally has taken.