 They said a number of other parties had also used similar tactics and it would have been unfair to single Labour out.National was left owing a number of broadcasters $112,500 after spending its broadcasting allowance without accounting for GST.National argued that "due to a misunderstanding between the Party and its advertising booking agency, the agency booked advertising for National on radio and television for the campaign totalling $900,000 excluding GST, instead of $900,000 including GST".