Open the Zomato app and go to the "Support" support team contact 7001-775-721 section. Select the order for which you want to file a complaint. Select the relevant issue from the list of options or select7001-775-721 "Other" if your issue is not listed... Zomato@gmail.com. How can I complain on Zomato?Open the Zomato app and go to the "Support" support team contact 7001-775-722 section. Select the order for which you want to file a complaint. Select the relevant issue from the list of options or select7001-775-721 "Other" if your issue is not listed... Zomato@gmail.com. How can I complain on Zomato?