Small car for a bit expensive money but needed it for business

The car exceed my expectations and I decided to extend for another week and had returned it today. The entire process of registering and picking up the car at the airport was very smooth. Throughly enjoyed having the car even though I had use it to bring me from point A To B . I would have love to take the car for a long trip. The only negative side is when I decided to extend the car for another week , I had someone ( with an Italian accent ) on the other line which I could hardly understand her . Positive side , she tried her very best and was very friendly.

The car's condition was good, and the pick-up process was smooth

Rented a car in Germany and Switzerland. The Enterprise rental counter at the airport was fairly easy to find. There were no lines, so the process was quick. They didn't check any translated driving license documents, just used my domestic license to get the car. However, the initial cross-border fee was high. After showing the staff the QEEQ order details, they reduced the fee by a few dozen euros (the order mentioned a capped cross-border fee). The order indicated a daily cross-border fee of 5 euros plus local tax, but the counter staff charged the maximum amount, claiming they didn't know how many days we'd be crossing the border. Is this reasonable?

We had a nightmare experience that is still ongoing - it totally ruined our vacation. We twice had to change cars due to 1 faulty car and 1 Mitsubishi recall - costing us two days of vacation circling back to Germany to change. Then after the second vehicle switch, we were charged 950 Euros (the full deposit) without explanation (bar one email to us addressed to a wrong email address). After many phone calls, being on hold for long periods and promises of calls back from Enterprise, we discovered that Enterprise at Nuremburg Airport (where we changed the second car) had 'discovered' damage after we returned the vehicle. Originally when we arrived they had thoroughly checked the car and exchanged telling us everything was OK, there was no damage. They just charged us without a discussion. Now they told us to email our complaint and we have had no response since we contacted them on 11th July. We feel scammed.

This part went fine and smooth - we were happy with the booking process.