1. Make online inspection on MCA portal and download copy of DIR.12 filed by the company for your appointment as director. Your signature on your consent letter might be forged one.
2. Send a letter to the company giving the facts and requesting for removing your name from Board of Directors. Attach copy of the letter to DIR.12 form and file with ROC online for removal of your name. This will relieve you from your liability as a director from anything wrong done by the company.
3. Thereafter you can take up the matter with company/ROC for action for including your name as director without your consent.