Delayed filing of st3 returns penalty amount

I am a service tax assessee.  I have filed ST3 Returns 43 days after due date.   During the period the paid service tax amount was Rs.1545/-.  The range officers requested to pay Rs.3300/- as penalty for delayed filing of ST3 Returns.  If the officer demanded penalty amount has exceeded the service tax paid amount, how much i have to pay as penalty for delayed filing of ST3 Returns.