Germany Austria Hungary Czech Republic

The store location is very convenient, all rental companies are between T1 and T2, easy to find. Processing one customer is very slow, around 15-20 minutes... The service attitude is quite average... Arrived at the counter at 6:40 am, a blonde lady said my reservation was for 7 am, so I had to wait 20 minutes. 20 minutes later, I was told they didn't have the car I wanted, only large vehicles like VANS, and I had to wait another 20 minutes... During this time, I saw four local German-speaking customers all get their cars smoothly (three of them were alone and only one group was a pair). Maybe I was overthinking, but they could all be renting VANS??? When I had waited for the third 20 minutes and saw another Chinese couple being told the same thing while locals got their cars smoothly, I got a bit angry. I directly asked the blonde lady how to resolve this issue, then a higher-ranking brunette came out, checked my order, and I told her about my waiting process. She immediately said OK, she would give me a new car but with an extra charge. Since I had already waited for over an hour, I didn't want to wait any longer and agreed. When I went to the garage to pick up the car, I found that they did have the car I wanted... it was just that they were all relatively new?? I don’t understand, maybe they were reluctant to give us these cars? Thankfully, the car I got was indeed new, with only 20KM on it... I probably won't choose this company next time.