Missing Christmas Parcel and Tracking does not work!

I used Speed Services to send a Christmas parcel to our Grandfather from Cape Town to Howick. I paid extra for a 48 hour service on 18th December to be delivered by latest 20th December. I was given a tracking number for online tracking. The parcel was not delivered and has still not been delivered, despite me tracking it online, which doesn't work, and calling the post office. I have been given misinformation about the whereabouts of the parcel. Its shocking service and personnel give misleading information.