letter stuck at JHB

My letter arrived on the 5th of June in Johannesburg international mail centre and it has been there ever since. <br> I have been in contact with the costumer care by email, because by phone they are unreachable ( I guess I'm not the only one with this problem). The nice lady at customer care says the letter is at customs. <br> So my letter is at costums for 2 weeks?!? I don't understand what the uphold is, it is only a letter.<br> This error by post SA has cost me a lot of money and tears. I now have to postpone my wedding. Who can honestly tell me what is going on, is the letter gone or missing just be honest.<br> International tracking code: RN***NL Domestic tracking number: RI***1ZA<br> <br> <br>