无法调用WCF函数

我有一个asp.net应用程序，我的数据访问层是一个WCF服务。我用的是VWD Express 2010。鸟瞰图中的整个结构是这样的

    [ServiceContract]
    public interface IExcelReader
    {
       [OperationContract]
       [FaultContract(typeof(StaffAllocationFault))]        
       void ReadExcel();
    }

    public void ReadExcel()
    {
        DataSet dataCollection = new DataSet();
        table = new DataTable("Capacity");
        //gets the connection string for the excelsheet with the employee details
        //string strCon = ConfigurationManager.ConnectionStrings["capacityDB"].ConnectionString;
        string strCon = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:'CapacityDB.xlsx;Extended Properties=Excel 12.0";
        //gets the predefined filters in the application
        string[] filter = GetDefinedFilters();
        //creates the connection object
        oledbCon = new OleDbConnection(strCon);
        try
        {
            //opens the connection object
            openConnection();
            string strCmd = "Select * from [Capacity Report Data$]";
            //creates the command object
            oledbCmd = new OleDbCommand(strCmd, oledbCon);
            //fills the datatable using the data adapter
            oledbAdapter = new OleDbDataAdapter();
            oledbAdapter.SelectCommand = oledbCmd;
            oledbAdapter.Fill(table);
            dataCollection.Tables.Add(table);
            //to trim off the trailing/preceding whitespaces
            foreach (DataRow row in table.Rows)
            {
                int count = 0;
                while (count < filter.Count())
                {
                    try
                    {
                        row[filter[count]] = row[filter[count]].ToString().Trim();
                        //if the field is blank
                        if (row[filter[count]].ToString() == "")
                            row[filter[count]] = "***";
                        count++;
                    }
                    catch (Exception ex)
                    {
                        throw new FaultException<StaffAllocationFault>(new StaffAllocationFault { FaultMessage = "Error while reading through the employee information" }, ex.Message);
                    }
                }
            }                
        }
        catch (Exception ex)
        {
            throw new FaultException<StaffAllocationFault>(new StaffAllocationFault { FaultMessage = "Error while retreiving employee information" }, ex.Message);
        }
        finally
        {
            //closes the oledb connection
            closeConnection();
        }
    }

    public void ReadFromExcel()
    {
        try
        {
            new ExcelReaderClient().ReadExcel();
        }
        //service specific exceptions
        catch (FaultException<StaffAllocationFault> ex)
        {
            throw new ExceptionLayer.StaffAllocationException("Error while reading from excel", ex);
        }
        //generic exceptions
        catch (Exception genEx)
        {
            throw genEx;
        }
    }

我的web.config在UI:

<client>
        <endpoint address="http://localhost:49171/ExcelReader.svc" binding="basicHttpBinding"
            bindingConfiguration="BasicHttpBinding_IExcelReader" contract="ExcelService.IExcelReader"
            name="BasicHttpBinding_IExcelReader" />
    </client>

运行应用程序时，wcf中的函数没有被调用。请帮助。