Unclear about what's included in the price, priced incorrectly

There's no counter at the airport. I met the staff in the parking lot; they were very responsible.

The deposit was not pre-authorized; instead, 1000 euros was directly charged from my credit card, causing a loss of 1000 RMB due to exchange rate differences.

Counter staff was very unfriendly and we had to ask for every piece of information!!

Did not have available the car I booked. Why not? It was fully paid in advance with a fixed arrival time. One hour into my journey the car developed an engine running fault. It took 5 hours to source a replacement car through an alternative hire company with an additional EUR580 cost.