The car rental company refused to rent a car to me using Zuzuche's international driver's license, stating that since I had previously been to Germany, more than 6 months had passed since my first entry, and therefore I could not use Zuzuche's license. I contacted Zuzuche, and their customer service said it would take 1-2 months to get a reply. I thought that was the end of it and waited for Zuzuche to respond and refund me. However, I later noticed that the rental company charged 340 euros to my credit card. (When I first arrived at the rental company, the clerk asked for my driver's license, passport, international driver's license, and a credit card, saying they needed to hold a deposit, so they had my credit card information.) The next morning, I went to the rental company to ask why they charged my credit card without authorization. The rental company said they were unaware of it and informed me that they were short-staffed on Saturdays and could not handle the issue, giving me a phone number to contact their headquarters on Monday. Today is Monday, and I called headquarters. They told me the charge is under investigation, and I need to wait. Meanwhile, I contacted Zuzuche's customer service, who had a terrible attitude and told me that since I contacted them at 12:15 PM to cancel the order, and free cancellations are only possible before 12 PM, I would not get a refund. Was it my choice not to rent a car? It's because Zuzuche and the rental company didn't arrange things properly. Why should the customer bear the loss? This was an extremely bad experience—I didn't get the car, my money was taken, and Zuzuche refused to refund me, causing a ton of trouble. I will never use Zuzuche to rent a car again! I checked reviews of the Zuzuche app online—it's full of negative reviews. If your rental process goes smoothly, consider yourself lucky, but if any problem arises, customer service will just say, 'We'll follow up and contact you as soon as we have news.' Decide for yourself whether to use this app.