Unauthorised re-routing of parcel

Yesterday I was shocked to find out that Fedex has rerouted our international parcel to an unknown address without our authorisation. Fortunately we were tracking the delivery closely and could alert them to their error. Clearly I wish to prevent my goods being ****** in future in this way so I decided to investigate (one would think Fedex would do that as a matter of course). A certain Vusi on their call centre was going to find out who requested and authorised the rerouting of our parcel but I have not heard from her. With their being no access to management at Fedex to discuss issues like these one is left to the call centre which clearly is not interested in *****ulent matters.