Fedex is your nightmare

I was tracking my parcel yesterday, system shows " delivered " while I am still waiting. System shows Eliaz singed which I don't know who. Even security siad they have not received. I tried to find out whats going on but there's no contact number I can talk to. It just goes to Virtual reception. Seems they delivered to wrong place. I wonder how they do that ??? How they can hand over my parcel someone I don't know without checking he is right receiver ? I am still waiting my parcel