Samruddha Jeevan Multi State Multi Purpose Co-Operative Society [Sjmmcsl] — samruddha jeevan have not reimbursed my bill payment of materials approx 4 lakh

My name is Balveer Singh. I have purchased material for samruddha jeevan multi-state multi-purpose Co-opr society ltd in January 2014 for branches. Total Cost of material 3.76 lakh and other expenses. I have original bills with tax paid. xerox copy already submitted in SJMMCSL pune H.O. . But Still I have not received any payment. I called many times to management. But they will not talk to me.
Please help me

My contact no.: [protected]