Kia Rio 2012 won't start

I have neen reading all the questions and am curious as to
why oeople mention putting the key in the ignition. The
2012 has push button. I kust spent thousands on new
battery and fuel pump because it kept stalling out and not
starting. After fuel oymp was replaced, it didmt have the
same pick up and seemed to hesitate at times. Engine light
camexon again and took it back. The mechanic said it had
to be reset and he turned the engine light off. Has been
working pretty well until I went to star it today. Lights and
heater come on, needkes start banging around but no noice
and won't start. Tried switching from park to drive and
back. Still wont start. What the hell is wrong with 2012  
kias? And why cant you get a straight answer?