Charge "that" to experience. You got screwed, conned, fooled, etc. etc. Subject car is in your hands now, papers signed, money changed hands. Ano pa habol mo? You'll just spend more money on lawyers, litigation, paperwork (again!), etc. etc.

The stress and hassle it will create ...........

Keep your peace, what goes around comes around.

I hope my being straight-forward helped a bit ..