Automatic update pivottable in closed workbook and email macro

Hi Excel Experts,

I have a macro which update a pivot table and if there is a change in pivot table send an e-mail if not saved and closed workbook (the workbook is open automatically by windows scheduler).
The problem concern closing whole Excel 2013 window.
If there is no change in PT my workbook does not close and I see a grey window of excel and when there is a change after update and sending email, I see my pivot table in open workbook.

How sould I modified a code to closed workbook no meter if there is a change or no in PT.

Thanks for help !

Function WBcount() As Byte
WBcount = Application.Workbooks.Count
End Function
Private Sub Workbook_Open()
Dim RowNoB As Long
Dim RowNoA As Long

With ActiveSheet.PivotTables("Tabela przestawna1")
  RowNoB = .TableRange2.Rows.Count
  .PivotCache.Refresh
  RowNoA = .TableRange2.Rows.Count
End With

Application.DisplayAlerts = False
If RowNoB = RowNoA Then
  If Not WBcount = 1 Then
    ThisWorkbook.Close True
  Else
    Application.Quit
  End If
End If
Application.DisplayAlerts = True

 'Working in 2000-2007
    Dim FileExtStr As String
    Dim FileFormatNum As Long
    Dim Sourcewb As Workbook
    Dim Destwb As Workbook
    Dim TempFilePath As String
    Dim TempFileName As String
    Dim OutApp As Object
    Dim OutMail As Object

    With Application
        .ScreenUpdating = False
        .EnableEvents = False
    End With

    Set Sourcewb = ActiveWorkbook

    'Copy the sheet to a new workbook
    ActiveSheet.Copy
    Set Destwb = ActiveWorkbook

    'Determine the Excel version and file extension/format
    With Destwb
        If Val(Application.Version) < 12 Then
            'You use Excel 2000-2003
            FileExtStr = ".xls": FileFormatNum = -4143
        Else
            'You use Excel 2007, we exit the sub when your answer is
            'NO in the security dialog that you only see  when you copy
            'an sheet from a xlsm file with macro's disabled.
            If Sourcewb.Name = .Name Then
                With Application
                    .ScreenUpdating = True
                    .EnableEvents = True
                End With
                MsgBox "Your answer is NO in the security dialog"
                Exit Sub
            Else
                Select Case Sourcewb.FileFormat
                Case 51: FileExtStr = ".xlsx": FileFormatNum = 51
                Case 52:
                    If .HasVBProject Then
                        FileExtStr = ".xlsm": FileFormatNum = 52
                    Else
                        FileExtStr = ".xlsx": FileFormatNum = 51
                    End If
                Case 56: FileExtStr = ".xls": FileFormatNum = 56
                Case Else: FileExtStr = ".xlsb": FileFormatNum = 50
                End Select
            End If
        End If
    End With

    '    'Change all cells in the worksheet to values if you want
    '    With Destwb.Sheets(1).UsedRange
    '        .Cells.Copy
    '        .Cells.PasteSpecial xlPasteValues
    '        .Cells(1).Select
    '    End With
    '    Application.CutCopyMode = False

    'Save the new workbook/Mail it/Delete it
    TempFilePath = Environ$("temp") & "\"
    TempFileName = "Deadline projektów " _
                 & Format(Now, "dd-mm-yyyy")

    Set OutApp = CreateObject("Outlook.Application")
    OutApp.Session.Logon
    Set OutMail = OutApp.CreateItem(0)

    With Destwb
        .SaveAs TempFilePath & TempFileName & FileExtStr, _
                FileFormat:=FileFormatNum
        On Error Resume Next
        With OutMail
            .To = "mymail@.com"
            .CC = ""
            .BCC = ""
            .Subject = "...."
            .Body = "..."
            .Attachments.Add Destwb.FullName
            'You can add other files also like this
            '.Attachments.Add ("C:\Users\....")
            .Send   'or use .Display
        End With
        On Error GoTo 0
        .Close SaveChanges:=False
    End With

    'Delete the file you have send
    Kill TempFilePath & TempFileName & FileExtStr

    Set OutMail = Nothing
    Set OutApp = Nothing

    With Application
        .ScreenUpdating = True
        .EnableEvents = True
    End With
End Sub