3 weeks ago, I submitted a request for Tax Credit to the Revenue for Health Insurance paid for 2004-2007. I was awarded credit for 2005-2007 only but not 2004, as it was over 4 years ago. If I applied 5 weeks earlier, it looks like I would have been OK. I am sure if I owed tax from 2004, I would not be exempt from paying it. Can I contest this and demand my 2004 credit ?