I rented a car through this site for 10 days in Germany. Even though I paid the full amount in advance, when I came to the counter of rental company at the airport, they did not want to give me the car without any explanation. I went to another company and rented and paid for another car. Rental24h didn't even want to pay me back the full amount of the payment, even though they didn't give me the car, but gave me less than 50% back! The case will end up in court and you should think carefully about whether to ever pay the amount to this "company" and use their services ever.