DHL needs constant follow up to do what you pay them to do !

I booked a courier costing R 556 on 1 December. It was indicated it would be delivered by 4/12. It was only collected on that date after which it sat in a warehouse until I followed up. It only left Jhb on 7/12 . Instead of delivering to George, DHL sent to Port Elizabeth. I have phoned every day since the 2nd of Dec & can only talk to call center operators who do absolutely nothing they promise they will. I've contacted the "Helpline" with no success. I have postponed travel to wait for this very important document but nobody at DHL cares. Without it I am unable to pay my 86 year old mother's bills causing much grief. How does one ever get hold of anybody in management at DHL ? Their staff are useless. I have 5 names of operators who have not done their jobs and who lie saying they'll call you back. I just can't believe an international company can make such a mess. I should have paid R99 and had it dropped at PicknPay and received a day after. However with the importance of the document I thought I'd use a reliable company to make things easy.