Complaint Review: Compuserve - circuit City

I purchased a computer from Circuit city and unknown to me they set me up with a internet service, Compuserve that I have never used and never wanted. The amount they had taken was about 400us dollars over a period of one and a half years. I noticed this when I saw it rather obscurely put on my bank statement. I contacted my bank and the compuserve fraud department and was told by both that a three month refund was to be given to me.
naturally they will keep 360us dollars of my money and the excuse given is that I should check my bank statement more closely.

This is a good point but does not excuse them for there misleading business practises which prey on the elderly and any other gullible people like myself. What can be done to stop this scam and how do I get my remainding money back.

Terence
san francisco, California
U.S.A.