freecreditreport.com messed up my credit

my credit was shot, so I took the advice of the guy that looks like me in the commercial and signed up for freecreditreport.com.  It was auto-billed ten bucks a month.  All was well for a while, and they kept good track on my credit score and if anything changed, they sent me an email.  Eventually my credit card expired and I had forgotten to cancel the freecreditreport.com.  They kept charging me, but I didn't know it, eventually it went to collections, so I had my credit score negatively effected by the company that claimed to help improve credit scores.  Buyer beware!