Sampark Agro Multistate Co-Operative Society Ltd — I haven't received my money.

Hi sir, i am from mumbai. I have invested 2000/ month for three years in this sampark agro multistate cooperative society Ltd. The total amount that will must received me is 93680/- I have invested in this firm for only 3 years...now it's almost 4 years completed since maturity but still I haven't received my money..plz look into this...if any documents needed I'll provide accordingly..help me out sir.. please