Uber India — amount to be paid for the ride

I booked uber share yesterday.. And i don't know due to some pickup or some other reason the map kept on showing wrong route.. After i reached my destination instead of charging rs 39.. The charge was rs 171 on driver's phone.. And it was showing rs 39 on mine.. I gave 40 and i don't want to deduct that money from driver's pay.. As it was company's fault.. Driver's name was shiv.. He rides in delhi.. And please avoid such problems in future