Resign as director

4 of us incorporated a private limited company in 2016. But due to certain circumstances all of us separated in 2017 on a bitter note without winding up the company. Now no one is working on the company and the registered office has also been vacated.

I want to quit as director of the company to avoid future trouble.

How should I proceed ahead.

Where to send resignation and who one file DIR12 on behalf of company.