Please contact your local FedEx Office with your tracking number, they will be able to provide specific details about where or who they delivered the shipment to. FedEx is usually very helpful in these situations and will be able to resolve this.
If the tracking information shows the name that was used to sign for the shipment, do you recognize the name? Is it a family member, roommate or neighbour?
If after following-up with FedEx you still require further assistance, please send an email to firstname.lastname@example.org or reach out via live chat (bottom right hand corner of your screen).