Springs Mall Steers Delivery System An Absolute Disgrace

I ordered food online via the steers app. The store my food was prepared at was the Steers at Springs Mall. On arrival of the delivery of my food the delivery guy handed me my food and I gave him R150 my meal cost R119.60 (incl) delivery. He then told me he didn't have change, I asked then what's the way forward and he told me I was meant to specify on the app that I needed change. I've never heard of this ever, and the app had no such thing about change. I then said I'll check in the house if I had R20 and unfortunately I didn't I had larger amounts. Coming back I asked him how much money he had because I have bigger amounts, and instead he took it in a flirtatious manner, smirked and said "are you asking about my money or the money I have for change" i don't know what kind of question that was. He offered me a speed point and I went back to fetch my card. He told me that I was wasting his time and I said if he had change he would've left a while back he started raising his voice and I said I'd call his manager. He told me he didn't care and that he'd give me his phone to talk to his manage. I told him me calling his manager is my decision and I didn't need to be done via him. He kept shouting at me, being rude and raising his voice. To the extent whereby I told him to process my payment and leave the complex premises. Instead he went on shouting at me, I asked him whether he knew that his behavior could make him lose his job or get into trouble at work. This driver was so rude, uncouth, disrespectful and he violated my right as a consumer to ask questions. He behaved in an unprofessional manner not only through raising his viyce at the customer, and not being necessarily equipped but by taking a simple question into a flirtatious remark). I was so upset, and felt so disrespected. The customer service I recieved was UNPLEASANT, UNPROFESSIONAL.