Narrative:

Cleared for takeoff. After power set; ATC stated '(our call sign); exit the runway and contact ground.' captain and I both thought it was an error in call sign for another company aircraft that just landed. ATC then again stated the above in a desperate tone. We saw another carrier approaching the runway and elected to reject. After we stopped ATC apologized for the confusion and messed up the call signs.

Google
 

Original NASA ASRS Text

Title: B737 flight crew reports a confusing clearance from BUR Tower during takeoff from Runway 15. The Tower had gotten their callsign confused with an aircraft that had just landed and the second transmission to clear on Delta was made with urgency and the crew elected to reject.

Narrative: Cleared for takeoff. After power set; ATC stated '(our call sign); exit the runway and contact Ground.' Captain and I both thought it was an error in call sign for another company aircraft that just landed. ATC then again stated the above in a desperate tone. We saw another carrier approaching the runway and elected to reject. After we stopped ATC apologized for the confusion and messed up the call signs.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.