The car is less than 3 years old and under manufacturers warranty . I take it that it was purchased from a Lexus Dealer. If that is the case take it back to the dealer and insist that they correct the damage. Lexus dealers often don't prepare cars to the approved used car standard, and they may well have done the paintwork, or rather had it quickly smart repaired. They generally don't use a Lexus Bodyshop for cosmetic work.