Uber India — Complaint against my last ride on uber

I booked an uber auto today which showed 572(in the app) rs to my destination from the pickup point.The driver was riding very slow and it took 1 and 1/2 hours to reach my place.after reaching the amount was changed to 843 by the uber app.driver asked me 843rs only when I told him it was showing 572 before and I had to pay un-necesserily.kindly resolve my issue and refund me the extra money I paid