Forcing an employee to accept cancellation without any dues

Dear Ms Khan,

I signed a job offer on Nov 2017 and worked for 2 years. The labour card & visa expired on 27 Nov 2019. The employer did not renew/cancel/pay salary from Nov. On 5 Jan 2020, I resigned.

On 6 Jan 2020, the HR manager acknowledged the receipt of my resignation. I filed a complaint with MOHRE. The employer attended the meeting and accepted my resignation without notice period.

He also agreed to verify and settle DUES within 3 days. MOHRE closed my complaint.

Now, the employer's legal counsel is threatening to file a case and contest on grounds of Breach of Contract & Conflict of Interest. They are forcing me to accept cancellation without any dues.

My questions are:

1: Are the employer's actions legal?

2: Can I re-open my MOHRE complaint? If the Employer is not agreeing to MOHRE mediation and goes to court. What is the prescribed time frame to resolve the case?

3: Because my visa and EID have expired, I am not able to travel or even get medical treatment for myself. What are my options?

Thanks!