Ugh, I've had paypal do that to me, too (I even checked to make sure my current address was selected BEFORE I placed an order, and it still came up as the old addy on the seller's end). I can't believe someone would go and sign for something like that and then not even try to contact you. What on earth would they even do with a snake viv? I really hope you're able to get a hold of them and get it back, good luck!