No action besides absolute silence!

I feel that I have been more than patient with regards to a personal parcel coming in from USA. A week before the parcel was due in SA, I received a phone call asking for my details so that a customs invoice can be sent to me. Then silence... I was tracking the parcel and was surprised at not hearing anything else as I know that the customs invoice should be paid before delivery. I finally received an email from Michelle asking when I was going to pay to which I rep**** that I was still waiting on the invoice - and I also asked for them to review the customs calculation as the amount due was astronomical compared to what I'd paid for the glass beads (nothing fancy but the fees were exceptionally high). Then silence... I followed up with several emails and continued silence in return. I then tracked down a phone number to call plus sent a message through the system. Geraldine was very friendly and helpful, and said she was going to follow up and reply... then silence! The automated message resulted in someone emailing me stating that they would get back to me... then silence! I emailed everyone again... and guess what? More than ANOTHER week later and still SILENCE! So, when do you think that you will actually be able to send me the invoice or parcel? (or will the parcel be sent back to the sender seeing that it has been here for more than 2 weeks already?)