Taxify needs to sort out their stuff.

About 2 months ago I had a car accident and rely on Taxify to get to my clients and to where I need to be. I use taxify daily atleast 5-6 times a day. The last few weeks I only had bad experience. Firstly on cash the drivers never have change. Just today my one trip was R219 and I only had 2x R100 and a R50. I sat 15 minutes waiting for the driver for change. He didn't have so I paid R250. again today my trip was R164. and again the driver did not have change. So I paid R200. After that I requested again and my trip was R42 luckily the driver gave me R20 change for a R100. This happens daily and I can't give a bad rating without the fear of the driver coming to my house asking why I gave a bad rating wich happend once before. This is not all the drivers,but I really feel something should be done about this.