I have received Health Care Card from Centrelink and I was asked to input the card number for discount utility fee from AGL. But I can't find any card number but my CRN in front of the card. If I put the CRN into the card number blank, it says "The number you have entered is not a valid concession card number. Please re-enter or if you still have problems please call AGL on 1800 813 028 (8am – 8pm, Monday to Friday)." I may call tomorrow.