Freecharge Payment Technologies / Freecharge.in — Unethical fees charged

Hi, I did a transaction of 20Rs using Freecharge Pay Later on 16 July and I didn't knew that I have to pay the amount on 5th of August.
I didn't received a notification before due date from freecharge and thus with the autodebit feature ON freecharge tried to auto deduct payment of 20rs from my account, now as I didn't had balance in that account I am being charged 590 Rs as a bounce charge!!

This is totally unethical as 590 rs is very big in comparison to 20 rs I used. Not only that as I didn't had an option to pay partial amount I am being charged 10rs daily as a penalty fee