Delivered to incorrect address and no feedback a week later

The driver from DPD Laser delivered my Sportsmans Warehouse purchase to the wrong person, its almost a week and I still haven't received feedback. Sportsmans say they are waiting for DPD to respond but how is that now my problem? And I have to keep following up with you? Not sure what DPD Laser's delivery process is and why they have not implemented a pin code system like other up and coming couriers to prevent these situations? Sportsmans I think its time you changed your service provider