Why are some doctors promoting DERMAPEN?

I had six treatments done for some acne scarring which was sold to me(expensive)Well it's been months and no nothing nada improvements at all.Why are some promoting this junk?All they are doing is stealling people's money.Yes i am bitter because i was lied to.This needs to stop if you know something will not work why not just tell the patient this.And the funny part when you go back for a scheduled dermapen they say 'oh it looks good'really please!

No doctor answers yet