The airport's Twitter (@TorontoPearson) looks to be very active, so you might also send them a message if you have that in addition to calling CBP. Squeaky wheel gets the grease.
From the CBP GE FAQ:
No, it is not necessary to obtain a Global Entry card to continue using Global Entry at airport kiosks. A card is only required for expedited entry at the SENTRI and NEXUS lanes coming into the United States