Open the Ecom Express app and go to the "Help"support team contact 9162-850-837 section. Select the order for which you want to file a complaint. Choose the relevant issue from the list of options or select “Other” if your issue is not only quick service and go for service trying.......Open the Ecom Express app and go to the "Help"support team contact 9162-850-837 section. Select the order for which you want to file a complaint. Choose the relevant issue from the list of options or select “Other” if your issue is not only quick service and go for service trying.......ppp