Uber India — overcharges only for 4km

On 9th of october we booked uber for 4 kilometers from kings colony to k. M function hall charged should be 60 or 80 rupees we have paid 250 rupees only for 4km. Even though we have promotion in uber of 50% off of 50 rupees the driver said its extra charge complaint to uber for this so i am complaining plz i expect that u. Understood. Plz we want our charges back. Thanking u.