Uber India — uber is heavily charging to customer for the ride canceled by their driver... why customer pay those amount to uber

Everytime i am facing the problem with uber that once we booked the ride, uber driver cancelled the ride.. Many times they keeps us waiting and after reaching to source they cancelled the ride... They ask us whr is the destination nd suddenly the ride git cancelled... The delay got added... Many times we r in hurry and suddenly got the pop up.
Also, major issue is uber is charging the cancellation amount to customer... Many times it is half the price of ride approx..

Why customer need to bare tht amount if their driver are cancelling the ride from their end...

This is highly unlikely professional nd not in the favour of customet