Milan-Maranello-Pisa-Rome-Bologna-Milan

At pick-up, the amount given to me did not match the agreed order amount. The rental service resolved this. However, after returning home, I received several unexplained charges (fines) totaling nearly 2000 RMB. Hertz only sent an email, claiming there was a traffic violation caught by a traffic camera, with a deduction of 31 Euros. There were no violation photos, no evidence, and no official traffic tickets. The rental service explained that it was a 'violation management fee' charged by the car company, and the fine was separate, which feels unreasonable.