Today a auto anna charged me 100 for a 1.5km ride

I had to quickly go to a pharmacy and booked a Rapido. The app showed 40-60. The person who called said he wants 100 for the ride. I told him it's merely a km and cancelled the ride. Then booked a Uber auto. The app showed 60. The auto anna said he needs 100. I had to take it because it was a little important. I asked him to drop me back in the same location. So basically for a total of 3km ride, he charged me 200. However you try to be fair and reasonable for the job they are doing, this is completely unacceptable and sometimes we aren't given a fair alternative too. And yes unfortunately I face this issue majorly only in Coimbatore.