Shutting down the office and closing the company are two different things.
They seem to have pulled down the shutters and left without paying.
All employees may join hands and stand united.
Approach IT employees unions. There are many and have affilliated with Trade Unions and have done a good job.
Engage a very able counsel specializing in Labor/Service matters.
Your counsel may opine to lodge complaint with;
Inspector appointed under Shops & Estbs Act
Inspector appointed under Payment of Wages Act
O/o Labor Commissioner ( may club all complaints)
Higher Officials of Dept. of Laabor (for examplary penalty)
winding up petition
If salary slips are not issued and salary is not paid then it might not have been processed and accrodingly stautory dues e.g; PF,ESIC,TDS, Gratuity, might have not been paid.
Complaint with RPFC, jurisdictional ESIC offcie, ITO-TDS where employees files ITR, CIT-TDS where comapny files ITR, DLC/ALC- Gratuity ...................may be filed.
Find out addresses and estate of owners and report.
You need to Act to defend your interst before owners disapear.
You may go thru:
The stacking order of priorities in secured lending
If they have run away let them be sent to jail.