I had already purchased additional insurance from a domestic insurance company on the ZuZuCar website, but even after clearly stating that I did not need additional insurance when picking up the car, the rental company still charged me 95.65 Euros for additional insurance from the credit card pre-authorization. Since I lost the contract and driver's license in the car when returning it, it's unlikely I can reclaim the charges. It's really disappointing that Avis, as a well-known international car rental company, resorts to defrauding customers for illicit gain.