maybe they didn't do it right, on the 2007 you should be able to do it yourself without any special tools
On vehicles not equipped with keyless entry, press and release the DIC INFO button until the TIRE LEARN message appears on the DIC display. Press and hold the SET/RESET button until a double horn chirp sounds indicating the learn mode has been enabled. The left front turn signal also will be illuminated
Starting with the left front tire increase or decrease the tire air pressure for 8-10 seconds until you hear the horn chirp, once you hear the horn proceed to the front right tire and do the same until you have completed all 4 wheels in a clockwise pattern left front, right front, right rear, left rear.