Uber India — excess amt received

On 6..10.18 i traveled in uber amt shown was 158 but end of the journey it changed to 240. So i paid 240.
On return journey amt shown was 226. But end of the journey it turned to 341. So i paid 341.
I am using uber cab regularly. This disappointed me. Very bitter experience with uber. I asked driver about this he said that he is not responsible for this. So pls do the needful and refund the excess amount.