Bad services from customer services debonairs

I have purchased a khwetha 5 special from debonairs Malvern on 2 February 2020. The order came very late on top of that the delivery guy was unbelievably rude and arrogant, when asked for his name he refused to give his name further to the frustration he brought the wrong cooldrink from what was actually ordered. I complained to the customer service on the 7 February and to date no one has contactdd me to resolve this matter. I have made numerous calls to customer service and have evry record on hand however on each occasion the consultant advised that they are sending an email to the Francise manager to respond and yet again no one made a coutesy call regarding this matter and to bring closure. Today, 18 March 2020 I once again called the customer service and they advised the store manager is to call me however still no call made to me. This is disgusting attitude and behavior shown to patrons of debonairs. Is this the way they treat queries and complaints? How long does it take to resolve a matter and does debonairs not value their customers. Very very disappointed in the way their conducting their business and their attitude towards their customers.