I can understand and sympathise with your anger and hurt. However it is unclear what you hope to achieve by telling people what a load of shyte you think they are, much though I am sure they deserve it.

In the long run people's misbehaviour not really matter too much so I would be inclined to be gracious. Just thank them for their time and wish them well.

In my experience a civilised ending leaves you feeling better about yourself than being unpleasant.