Customer Service VS Good Product

Recently I was informed by Lavasoft that my license of Ad-aware was nearly expired. You may not think that is out of the ordinary except that I bought the program when they were just an upstart company -- I was promised free upgrades for life. Their computer system does not recognize me as one of the people who purchased Ad-aware in the beginning years, these other people get the program for free. I even have proof, from their website, when I purchased the program. They sent me 30% discount (that anyone who already own the program gets) and a new username and password. Stupid. I'm considering downloading the free version.