Is this how Courier It do business?

Courier It sent me an SMS "We are unable to deliver your parcel waybill ********** 8456... Branch Tel: ********** "

I checked online and confirm they do have all my correct details.

I am working from home and was at home this week .

I did receive several calls from "unidentified number" and each time I answer nobody is speaking to me.

I phoned ********** this morning and indicated I am awaiting my parcel. I got transferred to another person and told my story again.

I then got transferred to the driver and I asked the driver when I can expect delivery of my parcel. The phoned got dropped on me.

I phoned ********** again and told them that the situation was unsatisfactory and I am taking it further.

My concerns are - Why is my parcel not delivered and why am I not contacted by Courier It? - If the "unidentified number" is from Courier It why an "unidentified number"? Surely that is totally unprofessional and unacceptable. Why does the person on the other end of "unidentified number" not speak at all. Do they just want to build up records that they did phone but they do not identifying who is phoning and do not speaking at all (numerous times). - Why while I am at home with another person working in my yard I do not have any indication that Courier It tried to deliver my package?

Courier It will definitely not be my delivery company by choose.