stalked by driver because of incident regarding debonairs's quality promise

I regularly order pizza online from Debonairs Goodwood. I mostly order the on the double feast. Twice previously when I received my order on presentation the pizza was cold and the dot was black. I let it slide and payed for my food. Last night once again I received my pizza and it was cold. When the driver took it out of his way overloaded bag the dot on the box was already black. I refused to pay him for the pizza because I know about Debonairs quality promise and this was the third time. The driver tried to argue with me by telling me it's black but it's not cold. His bag had way too much boxes inside. My pop-itz I ordered was completely smushed together. Please see attachment. I phoned the manager and I told him about what happened and he said he will talk to the driver, completely dismissing my word that the dot was black almost talking to me like I was lying about it. The driver then came back twice wanting the food or the money. I told him I phoned the manager and he still insisted on wanting the food or money. I told him to please leave my home. He didn't even go back to the store to talk to his manager before he came back to our house. Today once again he came back to our house. He is stalking our home. Why does Debonairs have a quality promise if the customers get treated like ********* and get stalked by the driver's when that happens? Please be so kind and explain this to me because the way I feel right now being stalked by the driver about this whole incident I don't think I want to order from Debonairs again.