I signed a contract with a coal trading company, and the coal was not issued and the coal money was not refunded. Is this fraud?

After signing a contract with a coal trading company, 700,000 yuan was paid in advance. After that, the coal company's train plan did not provide coal, and the coal company did not provide coal. Now he asks for a refund, and he shirks it. This is an economic dispute, not a criminal case, so we can't call the police and the public security organ can't accept it. You can only sue in court.