DHL Shocking service and *******

I am disgusted with DHL International in Midrand. I have been trying now for almost 2 weeks to get a parcel to Namibia that I have paid almost R4000 to ship. When I sent my documentation I mentioned I have never sent a parcel outside of South Africa and needed assistance. They dont communicate properly with you. Every 2 to 3 days there is a new query and nothing gets resolved. I have been shunted from pillar to post and even escalated and get blocked to get to top management. I managed to get to supervisor level with no joy. My parcel was supppsed to be in Windhoek 5 days ago. They happy to take your money but not resolve any issues. I got another quote for the same shipment for R1100.00 and got brilliant service from this small courier. Why am I paying an additional R3000 for horrific service. My shipment is still in Johannesburg amlost 2 weeks later. I dont know what to do. Just a heads up for all people wanting to use DHL. Everyone is apologetic but dont resolve the issue.