WRONG CALLSIGN USED AND ACFT FOLLOWED 2 MLG ACROSS ACTIVE RWY; RESULTING IN UNABLE TO CLEAR ACTIVE RWY AD SUBSEQUENT GO AROUND OF 2 ACFT.

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AFTER LNDG TO STAPLETON ARPT RWY 26 LEFT; WE WERE INSTRUCTED BY THE TWR TO EXIT THE RWY AT B3 THEN TO TAXI TO B4 AND HOLD SHORT FO RWY 26L. HOLDING SHORT OF RWY 26L AT B4; WE NOTICED 2 COMPANY MLG ON TXWY C4 BTWN RWYS 26L AND 26R. THE TWR THEN CLRED ACR MLG TO CROSS RWY 26R AND CONTACT GND CTL. AS WE STARTED TO TAXI FROM B4 TO C4 THE 2 COMPANY MLG DID NOT MOVE. AT THIS POINT WE HAD ALREADY XED THE RWY HOLD LINE AT B4; SO WE WERE COMMITTED TO TAXI TO C4. AS WE APCHED THE SECOND MLG PARKED ON C4; THE TWR TOLD AN ACFT THAT WAS ON FINAL APCH TO RWY 26L TO GO AROUND. SEVERAL MOMENTS LATER A SECOND ACFT LANDED ON 26L. AN MLG THEN LANDED ON RWY 26R AND TURNED OFF OF THE RWY AT TXWY C4 TO THE RAMP. THE TWR THEN CALLED THE FIRST COMPANY MLG PARKED ON TXWY C4; SHORT OF RWY 26R; AND ASKED THIS ACFT WHAT HIS NUMBER WAS. THE TWR OPERATOR THEN CLARIFIED ALL OF THE FLT NUMBERS OF THE 3 MLG FLTS PARKED ON TXWY C4 BTWN RWYS 26L AND 26R. AFTER ALL OF THE NUMBERS WERE CLARIFIED; THE TWR THEN CLRED ALL 3 ACFT TO CROSS RWY 26R AND CONTACT GND CTL. THIS SITUATION OCCURRED BECAUSE THE TWR OPERATOR PLACED OUR FLT NUMBER (ACR MLG) TO THE WRONG NUMBER.