Bad service with uber driver

I took an uber from home to a friend's place my fare was R52 and I opted to pay cash when I arrived at my destination gave the driver R100 and gave me R30 change when I asked why his charging me top much he told me that he is making his own money on the side I can't be paying this little for my ride, he became aggressive and told me to get off the car and mind my own business. I did that because I was scared and i am lady was fearful that he might even harm me