[Dp110096]

You could say it is damaged in some sense or say it is damaged and poses a health hazard. If not then you're pretty much out of options.

No don't say the package is damaged. Then the mailman will be at fault. The last thing you want to do while scamming is hurting the common man.
Just say someone stole the package. Can't you think of that yourself?

Well yes I did think of that but I know exactly what’s gonna happen with that. They’re gonna say we can’t help you until you report it to the police and they investigate it. So I don’t really want to go down that route.