Review City shuttle conductor KCW.. kinoo kikuyu bus

I boarded the above bus around 7pm.Gave the conductor KSH.1000. The bus fare was lab.80.He gave me msg.20 and I relaxed as always waiting for the other balance.To my shock when I near my destination( Uthiru ) and request for my change.The guy whom I know very well denied that I gave him Ksh.100.We argued till Kikuyu where they dumped me to find my way back without my change.
I have boarded the bus uncountable times,I know the buss and the conductor very well.