Due to issues with the rental company, our plans were delayed by a full day, resulting in direct losses of 130 euros for two room bookings. On the day of the incident, the rental company staff promised to provide proof documents upon car return, which we could use to apply for a 30% discount on rental fees through the rental platform after returning to our home country. However, when we returned the car, they denied this promise and only offered compensation for one day's rental fee. After we returned home and applied for compensation through the rental platform, they refused and only offered to add one more driver for free on our next rental.