IDBI Bank — closing account

This is to inform that i soumen guchait an account holder in idbi bank account no.[protected] is literally harrashed from this bank i have open my account 3 yrs ago and i have never used this account for transaction and even forget about this account now i want to close this account because my every lpg gas subsidy amount is deducting from this so i went in the branch and the branch staff is saying that i have to pay approx rs 10000 in order to close this amount and even they are enable to tell the exact amount and not capable of giving the full statement. And i am not capable of giving those amount in order to close this account.. I am a job based person with no savings at all...
So please help me in closing this account because bank staff i think is not capable in doing this even branch head way of talking is very much poor don't know how you select your staff in order to give customer service... Very unsatisfied with idbi bank.. Waiting for your prior response..
A/c in yamuna vihar branch

Regards
Soumen guchait