FIRE THAT DRIVER!!

I have never been soo humiliated by anyone in my entire life the way that driver did to me an hour ago. I placed an order for my meal, the total for the order was R100. Now on the app, I chose the cash option. Obviously that cash option will appear to the driver so he can be ready to give change if needed. Upon his arrival, he had no float on him, which he needs to carry for possible change. I paid using a R100 note, my change was suppose to be R19.10. He than tells me he has no change, I mean that's not my problem. There are shops all around where he could have gotten change. He then goes and gets 2 R50 notes, like really now? I said to him, but there are more shops, go get change. Why must I help him think? Then after getting change, he only wanted to give me R10, I said that's not the entire amount. I had the show him how much my BILL was (slow learner). Then he says he doesn't have a R1, he gave me R15. I just walked away, I was really annoyed by his slow thinking and action taking. He then comes running after me, dude I walked away, what more else do you want? As soon as I got inside the complex, he starts yelling and BICKERING with me. Now I'm a very quiet person, but don't provoke me! I started to bicker back, as I decided it's not worth it, he then swears at me and says "FUDGE YOU". I can't write the real word because hello Peter seems to sensor the words. What kind of service do you people offer with drivers who have the nerve of saying FUDGE YOU to its customers? My blood pressure literally shot up because I was shocked and upset!! I'm not happy at all, really not happy!! He deserves to be fire so he can value his job!