NHTSA Complaint #11502924 — 2015 KIA SOUL

Check engine light its been on for at least 25000 milles took it to a dealer to have it fix and they sayd its not covered under warranty even though car has a bumber to bumper warranty for 10 years or 100000 milles, currently have 88000 milles Dealer adviced that I had to replace upstream and downstream catalytic sensor and so i did with money out of pocket. Problem was not resolved and now they said i have to replace catalytic converter and that they don't cover under warranty. How come a car that is less than 100000 miles will need new catalyst? This is not good for the environment and kia should be responsible at least for 100000 milles. I asked the dealer that other same model and year cars have a recall to replace rear piston and catalytic converter due to overheating and they said my car does not qualify. Check engine light is still on and they want me to pay to diagnose it and whatever is needed its at my expense.