Is it possible for EMS to send the wrong items I should have received 4 laptops from china via EMS but I received a package contains many flash drives. Is it possilbe EMS send wrong items?

Is it possible for EMS to send the wrong items I should have received 4 laptops from china via EMS but I received a package contains many flash drives. Is it possilbe EMS send wrong items?
yes, they do that often