swift transportation told i was terminated now they cliam i quit and wont give reason for saying no rehire pheonix Arizona

On the day i got call from driver manager he told me on phone that his boss morgan had put me down as terminated

Awhile later i recieve depatcher letter stating i quit 

i have called many in hr and employee service  but no one can explain  it

recruting even tryed getting me back on saying thers no reason but was turn down

just wanting an answer now    and is it illegel to say your fired then put them as they quit ? 

lizanne luke thank you for your trying and hard work seems like your the only one that does try