BAD SERVICE

I ordered a product from China and it was shipped through LinexSolutions. The package arrived last week Thursday(17/03/16) but I have still not received my package. I was informed that my package was detained at customs and they required some documents to clear the shipment. Note, I was told this information after I called them, no one from Linex called me to inform me about this. I sent them all required documentation and called them again to confirm if they received, they did receive the information and told me they will let me know once the package is cleared, I waited for the call but I did'nt get any call back. I called them again on Friday(18/03/16) to find out the status. I was told the package was cleared and that I could collect the next day, which was Saturday(19/03/16). When I got there I had to wait for them because they were busy with other things, after waiting for + - 1 hour, I was told the package was not cleared, that I sent a wrong commercial invoice. SO I sent the correct invoice this morning(22/03/16) and tried to call them but I get NO ANSWER!! THIS IS UNACCEPTABLE SERVICE