Rude and Unhelpful

I am waiting for study material to be delivered to me from the ICB through Skynet. On Monday there driver called me and told me he is standing in front of my house which I then said was not the correct address it was supposed to be delivered to my office. He rudely then told me he will not come and drop my parcel off. I called the call center and asked them to please change the address. The lady told me it has been changed and will be delivered on Tuesday. by Wednesday it still had not been delivered. I called the center again on Wednesday and spoke to Catherine, first she told me that she cant contact the driver to which i responded is she can as the previous lady did so then suddenly she could contact him. Just to tell me he doesn't have my parcel. I asked for a managers number she gave me one that doesn't even exist. This Morning I call again and get told that the wrong address was supp**** to them so i explained my whole story to the lady and she told me that she will QUICKLY call operations. I was on hold for 15 MINUTES!!!! I then recalled the call center and was given the branch number of the branch where my parcel apparently is....there is no answer! I would like to know WHAT IS GOING ON WITH MY PARCEL!!!!!!!!!!! No one can give me an answer and it is ridiculous!