Beware of Hound.com 7-day trial

Hound.com offers a 7-day free trial and then bills you for the first month at $39.95. But the catch is you have to call to cancel the trial and you can only do it during California business hours. Today - Monday - I called them in the morning to cancel the trial I initiated last Monday afternoon and they said I had already been billed for the first month and they wouldn't reverse the charge. Even though less than seven days had elapsed, they said this was the eighth day of the trial and would not reverse the charge. Their attitude was that I should have read the fine print.