Courage/guarantee

Hello, I have been driving a Stinger GT since 2018 (just 50,000km). After a brisk motorway ride I noticed a loud grind in the exit. The front underbody cover had dissolved! Without foreign influence! Now the hammer ;- the car dealership charges me 462€ for the repair!!! Kia refuses a warranty or kulante solution! After a Sorento and Ceed the Stinger was my third Kia and now certainly also the last. Ride with your GT better only straightening speed, bevo That’s what happens to you, too.