B757 FLC RPT ATC COM CONFUSION BY ATC ON APCH CLRNC WITHOUT CHALLENGE BY FLC. FLC HAD REQUESTED RWY 24 AND RECEIVED RWY 25L WITHOUT ANY WARNING. RWY 25L WAS NOTAMED CLOSED. TWR GAVE LNDG CLRNC FOR RWY 25R AND SUBSEQUENT GAR AFTER FLC RPT ON ILS FOR RWY 25L.

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I WAS THE CAPT AND PF ON A FLT FROM KONA TO LAX. THE FO WROTE DOWN THE ATIS THAT TOLD US THAT WE WOULD BE LNDG ON RWY 24 OR RWY 25. CEILING WAS RPTED AT 300 FT WITH MIST; VISIBILITY 3 MI. FO CONTACTED SOCAL APCH AS DIRECTED. WE WERE CLRED DIRECT SMO VOR. CTLR TOLD US THAT AFTER SMO WE WERE CLRED TO TURN TO HDG OF 250 DEGS FOR RWY 7 APCH. FO QUESTIONED THE NEED TO GO TO SMO IF WE WOULD BE LNDG ON RWY 7 EVEN THOUGH ATIS CALLED FOR LNDG ON EITHER RWY 25 OR RWY 24. CTLR SAID HE WAS WRONG AND INDEED WE WOULD BE LNDG ON W RWYS. FO REQUESTED RWY 24R AND FURTHER ADVISED CTLR THAT WE WOULD BE AN AUTOLAND. CTLR REPLIED HE WOULD ADVISE TWR. I BRIEFED AN AUTOLAND TO RWY 24R. ON BASE LEG WHILE DSNDING TO 2500 FT MSL AND IN IMC CONDITIONS; CTLR ADVISED 'CLRED ILS RWY 25L; MAINTAIN 2500 FT UNTIL ESTABLISHED AND CONTACT TWR NOW.' WE HAD NO CLUE THAT OUR RWY WAS BEING CHANGED. FO RETUNED RADIOS AND FMC AND WE WERE ABLE TO INTERCEPT LOC. JUST AS WE WERE INTERCEPTING LOC FO REMEMBERED THAT RWY 25L WAS NOTAMED CLOSED. WE ARE STILL IMC AND NOW CONTACT TWR AND THEY SAY 'CLRED ILS RWY 25R.' FO RESPONDS THAT WE ARE SET UP FOR RWY 25L. AS I TELL THE FO THAT IT IS TIME TO GO OUT AND TRY THIS AGAIN; TWR DIRECTS A GAR. WE WERE VECTORED AROUND; CLBED FROM 2000 FT TO 2500 FT; FOR AN ILS TO RWY 25R. THE INITIAL CONFUSION WITH APCH CTL HAD EXTRANEOUS CONVERSATION ABOUT IT BEING LATE; NEEDING COFFEE; ETC; WHICH SEEMS TO HAVE ADDED TO US NOT BEING TOLD THAT OUR REQUEST FOR RWY 24R WAS NEVER HONORED. WE HONESTLY DO NOT KNOW IF WE WERE CLRED FOR THE ILS RWY 25L OR RWY 25R WHEN THE CLRNC CAME THAT WAS NOT WHAT WE EXPECTED (IE; WE EXPECTED RWY 24R) AFTER FLYING ALL NIGHT AND INTO IMC CONDITIONS.