They didn't mention any car damage when returning the car, but claimed there was damage the next day and charged me for it. Is this appropriate? Full of lies, do they think Chinese people won't bother with a few hundred bucks?

Did not deliver the car on time; it arrived the next morning.

Average, neither pickup nor drop-off was very convenient.

This is a very small rental company. You need to schedule the pickup time in advance, but no one actually arrives. You have to call them on the spot and then wait for about an hour. The car condition was poor, and the service was even worse. They almost forcibly required us to use ETC, claiming it was necessary and that highways do not accept cash, charging us 20 Euros. It turned out that it was not needed at all; getting it at the local post office costs only 5 liras. When returning the car an hour early, we were asked to pay a 3 Euro early return fee, which was unheard of. The staff barely spoke English, making communication difficult.

They don’t speak English The car was not in good condition