The courier guy Cape town lost my package

The Courier guy Capetown messed with my package. I'm very furious, I sent a package from Port Elizabeth to Capetown. I gave them the correct address phone number and name if the recipient it's even written on my slip. Shockingly and disappointing my parcel is now missing. They are giving me different stories and lying saying they went to the address for two days whereas the recipient has been waiting for them at the address, no calls no nothing. The next thing they said they delivered the parcel to another address I don't even know about. They even resent the pin to a different number so that they will be able to retrieve the parcel. I smell sabotage or theft here. I expect my parcel to be delivered to the correct person and correct address tomorrow before 5 to otherwise i will take further action...