Advocates:
For the Appellants/Petitioners: Ms.Durga V.Bhatt, Mrs.Shruthikka
For R1 & R2: Mr.Leonard Arul Joseph Selvam
For R3: Mr.C.Mohan, Ms.A.Rexy Josephine Mary

Based on the provided legal document, the key legal points are as follows:

1. The arbitrary freezing of bank accounts without prior notice or proper justification constitutes a violation of the principles of natural justice, specifically the right to be heard and the right to procedural fairness. Such actions require judicial oversight and adherence to due process (!) (!) .

2. The account in question was a non-operational account used solely for inward remittances from retail customers, and it was not used for third-party transactions or disbursements. Freezing such an account without specific evidence or proper investigation infringes upon the rights of the account holder, especially given the company's status as a publicly listed entity engaged in legitimate business operations (!) (!) .

3. The actions taken by law enforcement and banking authorities, including blanket freezes without quantifying the disputed amount or providing an opportunity for the account holder to respond, violate statutory and constitutional rights. Proper procedures, including issuing reasons, judicial approval, and proportionate restrictions, are mandatory (!) (!) (!) .

4. The account holder has repeatedly attempted to cooperate and clarify the nature of the transactions, including submitting representations and requests for data. However, the authorities failed to provide adequate information or follow prescribed guidelines, which is a breach of statutory safeguards (!) (!) .

5. The account was involved in multiple complaints, but the mere inclusion in complaints or automated databases does not establish criminal involvement. Reliance solely on such data without further verification or forensic evidence is insufficient and unjustified for freezing the account (!) .

6. The court emphasizes that freezing should be limited to specific disputed amounts rather than a blanket freeze of the entire account. Orders that do not specify the amount or duration of freezing violate fundamental rights and are subject to being declared illegal (!) .

7. The court directs the bank to de-freeze the account but to retain a lien over the disputed sum of Rs.3,03,998/-. The account holder is permitted to operate the account provided that the minimum balance of this lien amount is maintained at all times (!) (!) .

8. Overall, any restrictive measure should be based on proper investigation, specific evidence, and procedural fairness. Blanket freezes or actions taken without following due process are unlawful and infringe upon constitutional rights (!) (!) .

In summary, the legal principles highlighted include the necessity of due process, the importance of proportionality in freezing bank accounts, the requirement of judicial oversight, and the need for specific, verifiable evidence before restricting a lawful business operation.