Even that doesn't work in cases where the buyer issues a chargeback for the item. Unless they have changed their policy recently, even if you submitted such evidence and they found in your favor, it all goes out the window and you still lose the money and the item.
They don't fight chargebacks. All they do is take the money out of your account and say there is nothing they can do about it. They are so huge now there is little any sort of boycott or bad publicity can do to them.
Don't have money in your PP account at all times, no way to take money back.