Notice Period Dilemma: Can I Take Legal Action Against HR's Extension Request?

I have completed a 30-day notice period as per the terms of my employment policy. I had the Head of Department (HOD) sign my resignation letter before the 30 days. However, the HR person has not agreed with this and is trying to extend the notice period. This may impact my clearance. In this situation, can I take any legal action? Or what actions should be taken against this situation?

Subject: Request for Relieving on Correct Date

Hi [HR Guy's Name],

I am writing to discuss the content of the notice period clause and kindly request you to relieve me on the correct date as per the company policy.

Please be informed that obtaining a signature on the resignation letter serves as an acknowledgment of the receipt of the letter and not as an acceptance of the resignation itself. The acceptance of the resignation is officially communicated through the issuance of a relieving letter.

I would appreciate your prompt attention to this matter. If you require any further clarification or information, please do not hesitate to reach out. Your cooperation in this regard is highly valued.

Thank you for your understanding and support.

Warm regards

Dear Nitin,

Why is the HR trying to extend the notice period? What are his reasons to extend the same? Had you not kept the HR in the loop when you rendered your resignation? Has the HR just been informed about the same?

Before we can all answer, can you provide us with the entire scenario.

Regards,
Ashutosh Thakre