ICICI Bank — Bad Banking Experience

In the year 2014 I was a student of NIIT Jalpaiguri centre and they opened me an ICICI Bank account for the purpose of National Yuva Jyoti course. After that I haven't used that account from last 10 years. Recently I got a mail from ICICI bank that my account is in dormant state and I have to re activate that account. So as I have reactivated that account. But upon reactivation I surprised that my account has marked as lien on 2014 and the balance is showing negative 10 thousand. From the past one month I am visiting from one branch to another, doing calls and emails but no one has any answer why the lien has occured! I haven't used that account so there is no transaction history on that but why I pay for the lien which I am completely unaware about? Such a bad banking experience from icici!