Pathetic Service- call in never answered

On the 11 September we were flying from Jhb to Dbn on flight JE267, our flight departure was 17:10, from the 9 September I was receiving sms that the flight was going to be delayed. On the day the flight only left Jhb at 21:50. I had kids that were restless and falling off to sleep on the chairs but we controlled our patience level. A day later we got an SMS that vouchers will be issued to those passengers on that flight and in order to get those vouchers we need to call the contact centre. We have been trying since the 14 September until today when we call we have to listen to the adverts for hours and still nobody takes your call. The longest I had to hold on was 2 hours and still no human interaction. Not only are they delayed with their flights but delayed in assisting their customers.