We had already paid the rental fee and full insurance in advance. At pickup, one attendant asked us to pay a 730-euro deposit with a credit card or give him 30 euros in cash. We chose to pay the 730-euro deposit with a credit card. The attendant then said the card didn't go through. Another attendant came and demanded an additional 45 euros for windshield insurance before giving us the car. We offered 30 euros, but the original attendant denied asking for money. We were forced to buy the 45-euro windshield insurance. When we asked to cancel the reservation, they said no refunds. This way, we ended up paying more and the rental cost increased by 70%. Surprisingly, the same credit card went through immediately for the 45-euro charge, showing the issue with the deposit was fake.