Salary is not being paid for 3 months

Hi, I was working with Ahmedabad based company of hearing aids and my job was to see the area of Mumbai and maharashtra. In 2 years job I got promoted from ASM to RSM at the month of April 2017.my salary got increment of 5k. Now from the August month company said that we don't have sufficient funds to do your salary so collect as much money from the client and justify your salary.i tried to collect but targets didn't match and company has not paid for the same month.my national head told me that we will get it done in short while. September month also the same happened and they didn't credited the same salary .now I was not being paid for 2 months and my wife got ill because of that I couldn't able to work for some days.and my national manager was not picking up my calls when I was requiring money at the most urgent time. Even M D of the company was not responding to my calls and messages from 2 months. So I stop sending reports for the daily updates. Now they have sent me an notice to clear company's assets such as laptop and so on but not clearing or saying anything about my salary at all. What should I do??? Please write back to me.