Disappointed, scammers are the same everywhere

When I picked up the car, I had a lot of luggage. The counter staff suggested I switch to a bigger car. I thought the car he recommended was too expensive, so I declined. Then he took me to see a Kia SUV and said it was only $50 a day. Since the price was similar to my original booking, I agreed. But I was shocked to see the final bill was over $800 for 8 days. This is outright deception! It's partly my fault for trusting him because he seemed very enthusiastic, and I didn't scrutinize the documents after repeatedly confirming it was $50 a day. It seems shameless people exist everywhere. I've learned my lesson.