If it's in transit with UPS, then they should be able to stop it. But, AG might have to be the ones to call UPS since thye sent it. Unless they are items that are no longer available, AG should send you replacements if the package does get delivered to the wrong address. Also, if you lived in an apartment, you might try calling the manager of the complex so they can give a heads up to the current resident of your old apt. Maybe they could give it back to UPS with your correct address.