LOST PACKAGE FROM AMERICA

We have purchased DVD's from America on 11 April 2015 which have been forwarded to us as priority mail with a tracking number LK***US. Up till now we stil have not received the DVD's. We suspect that the parcel could be with the Customs at the Post Office in South Africa. We could not trace a tracking number and when we phone the numbers provided on the Internet it either just keeps on ringing or a voice messages is on and after a while the phone is dropped. An e-mail address appear as well as a fax number which we also tried without any luck. Both were returned undelivered. <br> We would like to know if the package is in South Africa as if it is not here jet to claim our money back from the person from which we bought it. This is now nearly 2 month down the line without any joy. <br> Would really want to know what happened to the package and if we will ever get it.