Extremely poor services from TNT

I am extremely disappointed in TNT's services. Refer to waybill ********** 40, i have been waiting since Tuesday 11 Dec 2018 for someone in TNT to tell me where my package is. Whoever signed for this does not work at our company, I don’t know this person? I have asked every employee in our office! I have even asked our security in the Office Park and I have asked our neighbouring companies. Every time I phone TNT, someone tells me they will get back to me. So 4 days later, I am still waiting for “someone” from TNT to get back to me. I am the contact person on the waybill and I did NOT get my parcel, yet payment has been done? The package contains business equipment and I am held liable for it. I am FED UP with TNT, the service is beyond poor. I want my package ASAP and for "someone" to get back to me.