PIL means public interest litigation, in your case there is no public interest litigation is found hence PIL cannot be filed.
A writ petition can be filed only when your grievances were not addressed by lower court or any other authority properly and it remained without any solution or their decision did not provide you any justice or solution or relief or remedy.
Your remedies are available in the legal forum namely NCLT.
The Central Government has constituted National Company Law Tribunal (NCLT) under section 408 of the Companies Act, 2013 (18 of 2013) w.e.f. 01st June 2016.
The companies act, 2013 will provide you proper relief for all the issues you are facing because of the fraudulent activities of the firm.
You may consult and discuss the matter at length with a lawyer practicing company law in thelocal for suggestions in furtherance