Review Complaint over non-rationalized fares from Kahawa Wendani

i am a resident of Kahawa Wendani since 014. i wish to report non-rationalized fares to town in the mornings in the recent past, particularity on Mondays. a case in point is today the 04th of June 2018, when we were charged 100/- without prior notice. i boarded the bus at 6.15 am and was ready to pay the usual 80/- but i noted that the conductor wasn't volunteering to give me the balance of 20/-. i alerted him as we neared town only for him to tell me the fare was 100/-. as we alighted at Tom Mboya Post Office, i noted other passengers asking for their balances but got the same response. Kindly confirm if the fares have been revised upwards, and if its rational to charge residents of Kahawa 100/- while those from Ruiru and beyond pay as low as 50/- during the rush hour. also confirm how a passenger is supposed to seek justice when they are left at the mercies of the conductors in spite of the fare board indicating clearly what the passengers should pay at any particular time. i wish also the cartel of 'makanga' at Kahawa stage to be dealt with. its my believe the vice is stemming from there