sorry to hear about your car. i absolutely despise speed bumps. i agree with what sundeep says. i dont know what the regulations are, however, the councils regulate everything that gets built very closely, so i would imagine that speed bumps would also be covered.
failing that, i would measure and photograph this bump, then measure and photograph the others in the centre. i would then meet with westfield and see if they would be willing to pay up. if not, i would go to the media. a legal bun fight may be very costly...remember, these guys can afford the best lawyers (meaning the lowest sleazeballs who will use every cheap trick in the book).
i feel sorry for you, but wish you all the best.
You wash your car like it was your firstborn child, you tend to its needs like it was your own body, you protect it like it's your family, then you drive it like you stole it.
Weapons of rice destruction
2002 Ford Falcon AU3 XR6
1985 Ford Sierra XR4i
1980 Ford Escort RS2000