Generally, a disposal web service consumer class will be created for you in the namespace you provided when configuring the service reference. The default namespace for such consumers will be under ServiceReference1, and the client will be named with the convention WebServiceNameClient. That consumer will have member methods representing all requests that can be invoked on the web service, for instance:
C#
My.Project.Root.ServiceReference1.WebServiceNameClient client = new My.Project.Root.ServiceReference1.WebServiceNameClient();
string action = "GET";
int id = 1;
var result = client.DoWebServiceWork(action, id);
VB.NET
Dim client As New My.Project.Root.ServiceReference1.WebServiceNameClient()
Dim action As String = "GET"
Dim id As Integer = 1
Dim result = client.DoWebServiceWork(action, id)