Guarantee companies have raised money from ordinary people. How can they get it back through legal means?

Two ways: 1, sue quickly, take the initiative first, and recover the principal and interest through judicial channels before the company's property is emptied; 2. report the case. The company is suspected of illegal fund-raising. If the property of the public security forces and the company is not lost, it can get a refund. Of course, there is another way, that is, threatening to report the case and asking the person in charge of the company to repay.