You had to pay for a burned out bulb??? Am I missing something??? Its covered under warranty why are you paying for it??? I've had 2 fog lamps replaced under warranty because they literally blew up inside the housing when i hit a big puddle of water under a severe rain storm and i've had two head lamp bulbs replaced under warranty before they ended up replacing both my entire headlamp units and its all covered under warranty.

On my other cars my S2000, Audi's and Benz's my headlamp bulbs were always replaced under warranty as well so i don't know why they charged you and why you paid. it's a warranty issue call DC.