Investor file complaint with ROC online:
Now investor in any company if they have any complaint on Shares or dividend,Debentures or bond,Fixed deposits (non-receipt of amount,Miscellaneous non-receipt,Non filing of return of cessation of a director in Form 32,Others like complaint of serious nature
There is very good online PDF form which one can easily fill basic information and about the company using the company master details.
Link to fetch company details online
Complaint on shares or dividend many of the time companies just get their shares de-listed from exchange and there is no way for investors to sell those shares. Those kind of matters can be addressed online.