CAR RENTAL REVIEWS ON CARFREE AT KRAKOW AIRPORT, KRK

I have already sent a formal complaint email to Carfree. The issue started when I picked up the car in the parking lot and noticed the left front tire had low pressure. I approached their staff to check, and they told me there was no problem—low tire pressure was normal for a car that hadn't been used for a long time. They refilled the tire pressure themselves, and trusting their professionalism, I drove the car away. Upon reaching my destination, the car was parked at the hotel entrance. When preparing to return to Krakow, I found that the left front tire had lost pressure again. I went to a nearby tire shop for inspection, and it turned out the tire was leaking from a previously repaired spot (I recorded a video of this). Acting responsibly, I called the rental company to report the situation. Right off the bat, they told me that because I didn’t purchase their insurance (I only had full insurance from Zuzuche), they would charge me 5000 PLN. What the heck!? No investigation, no discussion. Customer service gave mindless, robotic replies. After several rounds of arguing, they made up a story claiming that the tire was damaged by a rock and demanded I pay for two front tires. I have already sent a formal complaint email to Carfree. If their vehicle inspection standards upon return are like this, can I interpret it as risking customers' lives for profit? Charging the entire deposit without any investigation is utterly outrageous and predatory. This kind of foolish handling cannot be tolerated.