SBO-Online - Enhanced Billing Services Billed for services I didn't request on my AT&T bill Internet

I pay my AT&T phone bill online and failed to thoroughly examine the bill for several months.  When I finally did see my bill this month, I found a monthly charge had been added to my AT&T bill for the last 8 months.  This additional $15 was added to my monthly AT&T bill without my consent and for a service I didn't recognize.  I called the company and after they explained to me what their service was, they told me that I had signed up on line, that they emailed me a confirmation and welcome package, and that they called and spoke to me on the phone before billing me.  I explained that was not accurate.  I had never heard of their company, never signed up, have no use for such a service.  Also, that they had never spoken to me on the telephone.  I explained that I never answer my home phone so they could not have spoken to me.  They credited my bill for two months service (before I realized how far back this billing went) and said, as if it were punishment, that they wouldn't accept any business from me in the future.  After I realized this had been happening for 8 months, I called back and they told me it was against their policy to refund payments (the first two guys never said that) but they would refund me one more month's worth.  I said if they weren't going to give me all of the money back I wanted to speak with a supervisor.  They put me on hold and then said they would credit all of my money.  I had a good resolution, but I believe this business counts on people not noticing these charges and then when they do, convincing them they can't have their money back.