3. You have no proper records of your transactions and you may have done them directly through telegram or signal.
May I recommend to everyone reading the above (well written) notice that they should also NEVER take part in transactions on social media platforms where you are the seller, except in cases where you know the receipents well (for example, from this forum, and you are paying them for work).
That will save you from a lot of legal trouble later as you have no idea if they are shady or what they are even doing at the other side of the screen.
Please note that you can also launch a complaint against your bank for an illegal freeze on the Public Grievance Portal.
Can someone from india tell me if the institution handling that gets a lot of such complaints, thereby getting overwhelmed with them and thus some people do not get replies?
If you're not getting replies from a complaint body, then obviously, it won't help you much! (the Better Business Buerau immediately comes to mind as they have no actual power over companies to change their ethics).
During interrogation you have three important rights which you should always remember:
1. Right to remain silent: Article 21 of the constitution and Section 161(2) of the CrPC allows you to protect yourself against self-incrimination. They cannot physically or mentally coerce you to give a confession. Even during police interrogation, you are entitled to remain silent, therefore a police officer insisting on revealing your passcode to unlock your mobile phone and to open your e-mail accounts also amounts to compelling you to be a witness against yourself, which is in violation of Section 161 (2) of the Code of Criminal Procedure and also under articles 20 clause (3) and 21 of the Constitution.
It should be mentioned that most of the time, these demands to see your mobile phone or email will usually not mount into any evidence for or against you, particularly if there is hardly any data at all inside it about the crime.