New Kia rio5...drove 5 times, went to shift down & load clunking noise then dead

What is your question?

The dealership won't honor the warrenty because I burnt out the clutch. Actually I was driving very well and shifting fine. The last time I drove. I was.shifting down for a light and it made a horrible and loud clunking sound and came to a dad stop. I put it in first and it made the same sound an would not move. Since my that back of my car was sticking in another lane with traffic ...i pressed as hard as.i could on gas and clutch and it moved just enough and ... Then I smelled it burning...this was the first and only time that I smelt it burning. I am not sure what could have happened initially...but I thought it was running hot when this happened. I felt the gears just locked up. I also notice something leaking under the car. I know I did not burn out the clutch so what else could have happened? A response would be appreciated. It is a 2016. .so I prssed . end was in another end