I'm really not sure what more evidence you could possibly expect? They've provided a lot more evidence that it was a real heist than you provided it's fake (i.e. none) and posted a pretty detailed write-up of exactly what happened.
If you choose to believe it was a publicity stunt .. well then go for it. The truth is the only money was lost was their own, they really owe you nothing.
If you compare it to bitfinnex who lost a huge amount of other peoples money and has provided way less information (and not even said if they've found and fixed the issue) I think the PD team has handled it stunningly well.