Zomato — not refunding my money

Address:

Mumbai City, Maharashtra, 400706

I ordered some food from the app.. I used paytm as a payment method but the restaurant cancelled my order.. And the amount was refunded in the zomato wallet instead of paytm..
Also i asked the customer care.. They told they will refund in paytm wallet in 24-48 hrs
And today when i contacted them.. The customer support is refusing to initiate a refund in my paytm wallet..
Plzz help me to refund my money and take strict action against zomato app..