Your situation is like when the ticket checker comes and ask a ticket , you are telling, nobody asked me to purchase ticket to travel in the bus, hence i did not purchase a ticket.
The first and foremost thing you can do is come out of from that organisation as early as possible. With regard to your dues you can discuss with them calmly and try to settle the issues amicably. If they are not ready to settle the issues, you think that you are paying price for your ignroance/foolishness.
From India, New Delhi
From India, Secunderabad
What papers did you keep??
As I understand it-there is no joining letter,description of post/job,salary etc.
Where these points discussed when or before you joined??
How can you say you are entitled for performance bonuses?Are they part of your salary package??
I am asking this because nothing was formalised as per what I can understand.
In senior position when you join, working hours cannot be made like say 48 hours .
You need to work as per requirement even beyond normal working hours and holidays etc.
You should seek an appointment with your employer and discuss non payment of salary over last several months and other work related issues,but working hours is kind of grey area as you cannot claim workman hours.
In a start up these problems do take place.
One must try and make out are they genuine problems or a technique by employer to get work without payment.
Depending on the situation-tackle the issue straight with employer and with great deal of maturity and tact.
From India, Pune