DHL - the worst company in South Africa

This is the 4th time I have received bad service from DHL in the past few months. As I write this I'm on hold for the 12th time with this latest debacle. Goods were air-freighted from Scotland on 14 October (almost one month ago). Customs routinely impounded the goods for inspection, and DHL sent me a request to provide them with the alcohol quantity, which I duly did. One week later I had heard nothing and had to contact DHL, upon which I was informed the incorrect amounts had been entered on the customs form, and I had to pay a penalty of over R500.00! I had given them the correct details, they admitted it was their fault, and decided to waive the penalty. I paid immediately, sent proof of payment, and cannot get a response from anyone at DHL, including Aletta Tshabalala and Buhle Sekoboane. I managed to talk to a Tammy who promised me Aletta would return my call, but obviously she hasn't. I need the goods for Whiskylive Festival tonight and cannot get hold of anyone. The last shipment through DHL arrived with half the bottles missing. I don't know how they are still in business.