Bengaluru Metro Rail Corporation [bmrcl] — Penalty paid against card number: [protected]

Sir, the above referred card could not deduct the amount in my last travel during exit without my notice and the gate opened and I moved out of Attiguppe metro station. It was purely the mistake of the machine. and I was unaware of this. But today when I tried to use the card it failed and I had to pay a penalty of Rs 100/ to regularise, for the mistake not done by me.

How can I move out of a metro station If the gate is not opened? How can I overstay inside a Metro station. The mistake is only by the machine at Metro station and not by me. I kindly request you to consider the issue and arrange to add the Rs 100/ paid by me to the balance amount in the card.
Regards - S N Bhat, Bangalore