I ARRIVED AT THE SPIRIT CHECK IN COUNTER ABOUT 50 MINUTES BEFORE MY FLIGHT AT 1900.I STOOD IN LINE OUTSIDE AT THE CURBSIDE CHECK FOR 10 MINUTES.WHEN I FINALLY GOT TO THE COUNTER THE SPIRIT ATTENDANT TOLD ME THAT I WAS NOT GOING TO MAKE MY FLIGHT BECAUSE I DID NOT HAVE TIME BUT SHE SAID THAT I COULD MAKE THE NEXT FLIGHT AT 2130 (WHICH HAD OPEN SEATS) BUT I HAD TO TALK TO A SUPERVISOR.WHEN I WALKED INSIDE AND SPOKE TO THE SUPERVISOR SHE WAS VERY RUDE AND COULD CARE LESS ABOUT MY PROBLEM ALL SHE SAID WAS YOU LATE AND YOU HAVE TO PAY EXTRA TO REBOOK FOR TOMORROW.I TOLD HER THAT THE ATTENDANT OUTSIDE SAID THEIR WAS SPACE ON THE 2130 FLIGHT BUT THE SUPERVISOR RESPONDED BY SAYING I DONT CARE YOU LATE YOU HAVE TO PAY AND THEN SHE SMILED AT ME AS IF SHE WAS ENJOYING WATCHING ME SUFFER AND ANGUISH OVER MISSING MY FLIGHT.AS I TRIED TO REASON WITH HER SHE TOLD ME THAT I WAS GETTING TOO HOSTILE AND PLEASE GO STAND IN THE CORNER UNTIL I COOL DOWN SPEAKING TO ME AS IF I WHERE A 3 YEAR OLD CHILD.AT THIS POINT I WAS FURIOUS AND TOLD HER I WANTED TO MAKE A FORMAL COMPLAINT OF HER AND COULD SHE PLEASE GIVE ME HER NAME AT THIS POINT SHE REFUSED TO GIVE ME HER NAME STATING THAT I DO NOT HAVE TO DO THAT.AS I STOOD AT THE COUNTER THINKING ABOUT WHAT SHOULD I DO I MISSED MY FLIGHT I AM STRANDED AT THE AIRPORT AND I NEED TO GET TO ATLANTA FOR A FAMILY EMERGENCY MY ONLY OPTION WAS TO PAY THE 130.00 PENALTY CHARGE TO REBOOK WHICH BROUGHT MY TOTAL TO 379.00.I WANT THIS MATTER INVESTIGATED AND HAVE THIS SUPERVISOR REPRIMANDED. PLEASE FEEL FREE TO CONTACT ME AT ANY TIME AT THE ABOVE CONTACT INFORMATION BECAUSE I FULLY INTEND TO CARRY THIS COMPLAINT ALL THE WAY TO THE TOP OF THE ORGANIZATION IF NEED BE. THANK YOU FOR YOUR TIME.FINALLY THIS SUPERVISOR WHICH REFUSE TO GIVE ME HER NAME WAS A SMALL FEMALE LATE 40'S AND SHE LOOK LIKE SHE WAS FROM THE MIDDLE EAST OR FROM PAKISTAN.