Edhelper.com reviews and complaints

When I found the website www.edhelper.com, I thought that it was ok, but later I registered there and it was big mistake. I wanted to cancel the subscription and delete my account, but nothing worked. I tried to get any responses from the moderators, but they also ignored me. I wonder if there are other people, who had the same experience. Can you provide any good piece of advice?

Edhelper is full of ready-made worksheets, mini-books, activities, whole units etc. for levels from pre-k to high school. Teachers love Edhelper because they can supplement their activities and create homework easily. The subscription is $20 a year and $40 a year for all levels, up to high school. It's pretty worthwhile. I only wish the website was better presented (cleaner, better organized).