Something else has to be at work here. how could they possibly change your delivery address without all of your information?
Has your computer been compromised, have you posted alot of personal information online, do you think they doxxed you and maybe tried this way?
Somethin sinister is afoot!
Well, I made a quick search and its very easy to find all Sam's information online, including address.
EDIT: I hope customers will get tracking numbers for next batches. That would help monitoring the package from the very beginning, thus avoiding this awful situation.