No delivery, no communication from courier company

My package, couriered by UPS, arrived in South Africa 3 weeks ago. Here all communication stopped. They "apparently" tried to phone me, but my phone rang only once before the line disconnected. They have not even attempted to contact me through email to enter into communication or tell me what the hold up is. It's impossible to phone them. If you do get through once the telephone is supposedly answered by a person, there is only dead air on the line. So, I suppose it is possible that their phones have been down for the last 2 weeks where I was trying to contact them since there was no contact from their side. If you can't phone me, at least write me an email to tell me what is going on.

This has been the most frustrating, terrible, courier experience of my life.