Salary not paid

Hi, I would like to get advice on salary not paid by the company in current financial year. Let me brief, I joined a company and worked for 5 months as they were not paying salary on time. I left that company in mid Dec 2015. Company has not paid my 1.5 months of salary which they kept on hold and promise to pay with my Full and final. It's more than 3 months and I don't know when they will pay the dues. So, the questions: 1. Company deducted tax from my salary for both paid and unpaid(1.5 months). But it doesn't reflect on my Form 26AS. What should I do? Who is responsible for that? Should I ask my employer to submit? 2. Company has not paid 1.5 months salary. Should I show this unpaid amount in my ITR? 3. What if company pay the due amount after 31 march? or company doesn't pay at all. 4. Should I take some legal action against my past employer? Please suggest, what steps should I take to ensure with income tax compliance. Regards, Ashutosh