M3: Consume public API SOAP web service from .net web application

Has anyone been able to connect to and execute a public SOAP web service from a .net web application. I get an error message along the lines of there aren't any web methods defined in the wsdl when I try to add the service reference to the project. Is this even possible? My goal is to send an employee evaluation score from a home grown application to an employee's record in Infor.