Bad customer service

Saturday the 16th September we had power outage in our area due to storm. I called Debonairs Pizza Mount Edgecombe to place an order and was going to collect. On our arrival the Pizza was not ready and was informed we have to wait for about 6 minutes for it to be ready. We waited for about 15 minutes, I went up to check why our order was not ready, was informed by a guy that the pizza was ready minutes ago, he said he’s been calling our order number and the dot was even black. It was three of us and it was strange how can the three of us not hear. The indian guy was so rude and shouting at me, I pointed out to him I am not deaf there is no need for him to shout, he went away and left me. I asked the other guy ( black guy) to call the manager for me and he said there was no manager . I asked him to call whoever who was in charge he said there was no one, one lady who was at the kitchen pointed to a lady who said she was a manager. I raised my concerns regarding the appalling service I received, the manager apologised. I have never received such bad customer service, I had my two kids with me and they said they will also inform their school mates about the bad service we received. I wish you can sort out their service!