Open the Zomato app and go to the "Support" support team contact 629-754-7308-section. Select the order for which you want to file a complaint. Select the relevant issue from the list of options or select "Other" if your issue is not listed... Zomato@gmail.com.Open the Zomato app and go to the "Support" support team contact 629-754-7308-section. Select the order for which you want to file a complaint. Select the relevant issue from the list of options or select "Other" if your issue is not listed... Zomato@gmail.com.