Zomato - Refund Not Received

I placed order from Zomato in Domino's pizza on **th October but they cancelled order from Domino's and told they will initiate refund. When i contacted Domino's they told that refund has been intiated from their end. They told to contact Zomato. When i contacted Zomato they told that Domino's Pizza orders are not maintained by us they told to contact restaurant only again. But in Zomato they mentioned that the order was delivered. How can they mention like ?? Who is going to provide me refund either Domino's or Zomato. And it's already been ** days. I am not able to contact since they will be able to connect via email only.