[Solved] ASP.Net MVC Error: String type can not be converted to ActionResult

Please help i am using this controller to return values from the storedprocedure but i am getting the error below

Error String type can not be converted to action result

Namespace Controllers
    Public Class SendController
        Inherits Controller
        ' GET: Send
        <HttpPost>
        Public Function GetCustomers(searchTerm As String, Pageindex As Integer) As ActionResult
            ' Dim query As String = "[GetCustomers_Pager2000]"
            Dim cmd As New SqlCommand("GetCustomers_Pager2000")
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@SearchTerm", searchTerm)
            cmd.Parameters.AddWithValue("@PageIndex", Pageindex)
            cmd.Parameters.AddWithValue("@PageSize", "15")
            cmd.Parameters.Add("@RecordCount", SqlDbType.Int, 4).Direction = ParameterDirection.Output
            Return GetData(cmd, Pageindex).GetXml()
        End Function

        Private Shared Function GetData(cmd As SqlCommand, pageIndex As Integer) As DataSet
            Dim strConnString As String = ConfigurationManager.ConnectionStrings("STOREConnectionString").ConnectionString
            Using con As New SqlConnection(strConnString)
                Using sda As New SqlDataAdapter()
                    cmd.Connection = con
                    sda.SelectCommand = cmd
                    Using ds As New DataSet()
                        sda.Fill(ds, "Customers")
                        Dim dt As New DataTable("Pager")
                        dt.Columns.Add("PageIndex")
                        dt.Columns.Add("PageSize")
                        dt.Columns.Add("RecordCount")
                        dt.Rows.Add()
                        dt.Rows(0)("PageIndex") = pageIndex
                        dt.Rows(0)("PageSize") = "15"
                        dt.Rows(0)("RecordCount") = cmd.Parameters("@RecordCount").Value
                        ds.Tables.Add(dt)
                        Return ds
                    End Using
                End Using
            End Using
        End Function
    End Class
End Namespace

 The error comes when i reach here

Return GetData(cmd, Pageindex).GetXml()