If there is still no one contacted you despite of the present issue in relation to the freezing of your bank account, better do make your own move of going into your bank personally to ask for the problem on why they have done such thing without providing a notice sent to your given contact details because normally they will notify you about the issue your bank account is facing through and will ask to see you at their office to submit a report to clear things out and once you failed to do such it is their move to do what is in the rules written under the terms and conditions applied on creating your account on which maybe you have got a problem.

If they fail to provide you reasonable explanation of why they did that, then get yourself into a legal consent from an attorney to raise up an appeal so that you can do something about the problem. If it is about doing transactions on cryptocurrencies and you are from India, then you do really have to seek legal consultation for I know India have already allowed cryptocurrency in their country aside from using it to purchase goods and services. Maybe there is just a misunderstanding on the part of the bank which you must know about and that must be put under negotiation to solve the problem.