I signed up for a "free" 3 month trial...or at least I thought it was free. I wrote it down in my June calendar so I could cancel it before the free time ran out if I decided I didn't want it. Charges started showing up on my card and when I e-mailed them, they said I had signed up for a 1/2 price 3 month trial, not a free 3 month trial. I have no paperwork to prove differently because I can't find the original email so now I'm paying for it for 3 months, but believe me I'll cancel it in June.
Watson