If they send it by mistake, it's their fault, so don't worry. Just call and ask.
3. If you are an impostor, the reason is that if you disclose your information, it is your own fault and you bear the loss; If the reason is that the deliveryman is irresponsible (for example, someone downstairs claimed to be you and gave the goods to him directly without checking), it is the deliveryman's fault and he will bear the loss.