Taxify *****s

Its now the 2nd time, that I organise rides with Taxify. The qoute me for Example R101 and then when the ride is done, the driver wants extra money and the charge is more R145. This is not fair to the people, cause I only give them the right amount. Please guys, dont ripp us off. We like using you more the Uber, please dont dissapoint us again.