Australia Post

My family and I have been sending things to Guyra for a long time and never had a problem, until the other day. We sent my Mother in-law her Christmas present, when she recieved it, it was fully ripped open with tw0 presents taken out of the package. My Mother inlaw when to the post office and they were very rude and treated her with alot of disrespect. She was pretty much told that it was her problem, as the package was delivered.