A CLBING B727 IS CLRED TO FL330 3 TIMES -- FROM FL230 ONCE; FROM FL300 ONCE; AND FROM FL323 THE THIRD TIME. CTLR ALLEGED THAT THE CREW HAD READ BACK AN ORIGINAL CLRNC TO CLB TO FL310.

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126.57; FL300; ZFW; TXK VOR. CLBING TO FL230 WE WERE RECLRED TO FL330. CTR ASKED US TO EXPEDITE OUR CLB FOR TFC BUT DID NOT SAY WHO; WHERE; OR HOW LONG. THROUGH FL300; CTR SAID CLRED TO FL330. WE THOUGHT THIS ODD BECAUSE HE HAD NEVER GIVEN US ANY OTHER ALT. FO READ BACK CLRED TO FL330. OUT OF FL323; CTR CALLED AGAIN AND CLRED US TO FL330. THIS TIME WE WERE CONCERNED WHY HE CLRED US 3 TIMES TO THE SAME ALT. WE ASKED HIM WHAT ALT HE THOUGHT WE WERE CLRED TO AND HE SAID FL310. I GOT ON THE RADIO AND TOLD HIM HE HAD CLRED US 3 TIMES TO FL330 AND NEVER CLRED US ANYWHERE ELSE. HE STATED WE HAD BEEN CLRED TO FL310 AND WE READ BACK FL310; WHICH WAS NEVER THE CASE. THE STRANGEST PART IS THAT A FEW DAYS EARLIER ALMOST THE SAME SCENARIO PLAYED OUT IN THE SAME SECTOR OVER TXK VOR. THE CTLR THAT DAY DID THE SAME THING -- CLRED US TO FL330; AND WHEN WE STARTED CLBING; SAID HE NEVER CLRED US OUT OF FL260 AND WE ALL 3 HEARD THE CLRNC. I DON'T KNOW IF IT IS THE SAME GUY OR NOT; BUT IT NEEDS TO BE LOOKED INTO.