swipebids.com sphere media llc predatory company victimized me by charging my debit card without my permission Internet

I was browsing the internet looking for computers on sale when I came across swipebids.com. I registered at the site so they would send me e-mails about products they might have for sale.
I have my computer set for "auto-fill" and because of that they were able to access my account for 150.00.
I called them within minutes and told them it was an error and asked them to rescind the charge. They told me that just by registering I had ordered their services and no refund would be given.
I have gone on the internet (pennyauctionwatch.com) and found many complaints of exactly the same thing happening to other senior citizens.
I did not order anything from them, I did not use any product of theirs, they took my grocery money and they threw me into an overdraft situation.
This company has done this to many many people and someone needs to help us put a stop to their thieving ways.
This is a predatory company who is victimizing senior citizens. HELP!