Combobox.Items.Clear not working!

[malleyo]

I load a Combobox with the following code:

Public colCustomers As List(Of Customers) = Nothing

Public Sub LoadCustomers(ByVal cbx As ComboBox)
        
     If colCustomers Is Nothing Then
          colCustomers = LoadCustomerList()
     End If

     cbx.Items.Clear()

     For Each Customer In colCustomers
          'Code to Add Customers
     Next
       
End Sub

I need to be able to call this function again and have it clear the combobox and reload the Customer List into it. However, when I call the function a second time, it leaves the name of the last Customer that was selected. cbx.SelectedIndex = -1, but cbx.Text = "Customer Name". I need this combobox to be completely cleared out with nothing selected and nothing displayed. Why doesn't cbx.Items.Clear clear the cbx completely?