Bad service

I made an online order at debonairs blue hills this morning. Invoice number:247491, I ordered a meaty triple decker and a buddy creme soda at 10:05 today the total was 78.80r. At about 11 or 1130am the delivery guy came to deliver at Spark Carlswald he only brought the pizza and no cool drink and he said that he forgot to bring the cool drink and that he will come back I paid with a 100r note and he said he didn't have change because he is coming back he will bring the change along aswell. The guy did not come back I called debonairs blue hills and the lady did not take any details but only said that she will get the driver to come back and the driver still did not come back called again at about 14:00 and spoke to mohlalipula and she took down invoice number and told her what I had ordered she said she would call back and she did and she said she spoke with her manager and they will make sure that the delivery guy comes back with the change and cool drink and the guy still did not come back. I am so dissapointed with the service I've recieved from debonairs considering the fact that I am always ordering from them and today this is the service I get and the mere fact that no one is seeing the urgency in this matter.