Fast and Furious - Slow and leaves me Furious

My parcel was collected from JHB on the 31st of May and arrived in Durban on the 1st of June. It is now the 6th of June and i have still not received my parcel. I phoned their call centre and it just rang and rang and rang with no answer. i eventually found a JHB number to call and spoke to a lady there who was very rude. I have previously had an issue with this courier service and spoke to the Durban branch manager Dean who sorted my problems however their service (or lack of it) continues to disappoint. If you are unable to handle the load then either up your charges and hire more drivers, only accommodate certain areas or take on less work. It's not right that we must suffer because your drivers cannot handle their loads