[jalascoo]

I turned on my car and started to back out from my garage this morning. Since I saw there is a yard paper bag on my drive way, so I put the car to neutral and put the handbrake firmly before getting off the car. After I removed the bag, when I was going back my car, I found my car was slipping out! My garage is just a normal one with normal slope.
Should the handbrake keep the car still? My door on the driveway side was totally damaged as it crashed on my garage middle poll.
Should I complain to Toyota for this or just swallow this bad luck?