Regarding booking money given to a company for land and it's refund

Dear sir, actually I booked half acre land in mahad, Pune from a company. I already paid 42k for this in their account. But the property is not completely handed over to them, so they told us to withdraw your amount. But they are delaying the process, it seems they will not refund our money. And toady I called texted him he told what mahad. It becomes more than 1 year. They are not responding our calls and messages. In this case what we can do.