You enquire from bank that why and on whose orders this has been frozen
A bank in India can freeze a bank account - either current or savings - without the order of the Court, subject to the following conditions: Due to non-Compliance of KYC requirements by the account holder. ...
Upon receiving orders from SEBI, RBI, and Income Tax Authorities for freezing of the account of an account holder.
Conducting Unlawful Activities such as money laundering, terrorist funding, receiving suspicious payments from outside the country, etc.
Depositing huge amount of money in a way that it creates suspicion in the minds of the bankers.
When a bank freezes an account, the account holder will, still, have limited access to his account. He can check his transactions and receive certain deposits. However, he cannot withdraw or transfer his money to another account till the issue that caused the account to be frozen is settled completely to the satisfaction of the bank.
You may clarify from the bank about it and take necessary action as instructed by bank in this regard.