SELF HELP WORKS charged me a $24.95 monthly fee without my consent or knowledge/false transaction Internet, California

On 12/3/11 I was charged to my Bank of America credit card account a fee of $24.95 for a false transaction.  I called the company and was told it would be charged monthly from now on and they could not tell me what the charge was for.  A very nice lady told me that it was probably related to another purchase I made but could not tell me what the original purchase was that was now associated with this monthly fee. m She said she would would refund the amount and cancel future charges and gave me a confirmation number.  I am extremely concerned about this fraudulent activity.  I want this to be investigated and plan to notify my bank as well.  Please advise me what is going on and should I be concerned for future charges.  I am retired and on a fixed income.  This is elderly abuse which I believe is against the law.