Event Cancellation Policy For a full refund, you must call 72 hours in advance. (This policy does not include Annual Conference. See Annual Conference Event Registration page for details.) Basic Plus, Premium Plus and Student Premiers will be responsible for the full Illinois ASBO Member Fee if you are a “No Show.” Others will not be refunded and/or will still be invoiced and responsible for the charges. To cancel your event registration, please contact Illinois ASBO at (815) 753-9305 or (815) 753-1276.