Delayed package

I have shipped my package with DHL and it is with them for more than 10days now, it was due for delivery last week Wednessday. Before my package arrived calls were made to me and asked have you receive the invoice as payment needs to be made for customs purposes. After payment was made, they do not bother calling you and giving you an update of the package. Numerous call were made on my side and were told that the package has been booked for inspection. After that I had to call again and were told Kgomotos is dealing with the shipment, he in return asked for proof of payment, that was sent and he said he was working until 5pm Friday he will sort it out on Monday. It is Wednessday and i was still waiting send him an email and he rep**** that he will escalate it to customs. My wife called on Monday and a lady answered the phone and said the package is being held for further inspections to see if it is a legit product. Why am i paying thousands of Rands for a speedy service and get pushed back and forth like this. If the package were booked for inspection, all the above should of been looked at, its like you are searching to find fault at all cost. I could of used a budget economy courier which would of done a better job. Also i have another package to shipped from the use, but i will indeed use the service of fedex.