Shesha Drivers don't stick to fees

Earlier this month (October 2015) I made use of the Sandton tuks tuks every day for a week. Every day I was charged a different fee, the highest being R55. I took one again today (20 October 2015) and the screen was on stating that for a trip under 3kms the fare is R25. I googled the drive and it's 2.7kms, so I paid the driver R25 even though he had stated that I should pay R45. <br> <br> Why are drivers not sticking to the allotted fees? I have been cheated on my trips earlier this month and would like a response to this.