Fraud company not refunding my payment,what legal action should I take

Sir i am a small bussnessmen from jammu ,about 8 months ago a company represantative came to us and shown their products and schemes to us . After detail meeting we get agreed to become super stockist for their product. We credited a sum of 5 lakh to the company account from jammu to their nasik branch account where company official operating address is. After 1months we received stock . Then 2 months passed no company sales team or marketing team came to us 4 months passed no response from company and its team after 6 months the products expired and we decided to return the stock back to company in nasik .after discussion with company MD they agreed to return stock .we return their stock at our own expance of about 40000.they received stock in january ending . Now they are not refunding our payment and not even answering satisfactory .what should we do legally to get our payment back.