Facing Legal Trouble After Leaving a Job: How to Handle Data Theft Accusations and Withheld Dues?

I was working with a firm for the past three years, but on the 8th of June, I planned to leave the organization due to salary issues. Later, I found out that I could work with the competitors on my own, so I submitted my resignation on the 10th. I was serving my notice period and working for the competitor while still employed by my company. On the 15th of June, my employer discovered that I was misusing their data for personal gain. They pressured me to continue working for them, but I declined. The next day, I contacted my boss to inquire about serving a notice period, and he informed me that it was unnecessary.

Following that, they did not provide any documentation regarding my employment or settle my full and final dues. After two months, they began pressuring me to sign a bond and affidavit declaring that I had no data with any third party, but I refused. Consequently, they sent me a legal notice. When I left the organization, they accessed my email and received payments from a competitor under someone else's name. Now, they are challenging me to prove that the company received the payment. They continue to withhold my remaining dues and refuse to issue any employment-related documents.

Moreover, no acknowledgment letter was issued when I joined the company, and I never signed any bonds with them.

Hi, what you have written here is very disjointed. Trying to make sense of it but somehow unable to do so. First of all, it is naive to work for a competitor while you are on your notice period, especially from the current employer's premises (if that is what you have written and we have understood).

Some questions:
Have you agreed that you misused their data?
Did you give it to them in writing?

Given the confusion in your statement, we will not be in a position to answer you.

No, I have not given anything in writing, but they have my chats on Skype. They are trying to get my signature on an affidavit, which states that I don't have any data and won't be using it in the future for my personal benefit, nor will I incite any third party to sell the data to any competitor.