You should not mention that you will go to labour court just like that in your 1st email to director, without understanding the legal procedures in Indian acts.
If your salary is more than Rs. 18000/-, you will not come under purview of payment of wages act. so, you have to go to labour court and file a case by having an advocate for you under industrial disputes act. which will be a costlier process. Just for one or two month salary, you may be forced to end up with legal battles. Mostly Indian acts will cover the low salaried employees.
So, best is for you to deal with your employer in soft mode to collect the dues ( collective bargaining). The continuous emails and phone calls may make them to pay your salary and get rid of you. If you have absconded without serving notice period, they may consider that salary to adjust in the notice period due and pay the remaining if anything available.
The emotional decisions will never benefit an employee. You should have availed a suggestion here before quitting a job which would be a wise decision.
More details of you could make us to give good suggestion. how many years you have been working, which location, employee strength in india, any office address they have in India, approx salary package, etc.,