Uber India — Unfair taxi charges

On 7 th april 2017 i took an uber taxi from kesavadasapuram to karikkakom (places in Trivandrum, kerala which are hardly 8 kilometres apart ).uber promised me an initially price as 172 rupees.More over i had a ride in uber ti these same places at a lower price.On reaching the place i was asked to pay 403 ruppes and the uber bill came as i took a 27 km ride.I don't understand why they impose such unfare charges when I actually took only an 8km ride.