Whilst idly scanning through my bank statement I flagged a £79 direct debit from Amazon.
I knew I hadn't purchased anything of that value from them so, thinking that my account may have been breached I called Amazon.
It transpired that I had apparently signed-up for "Amazon Prime" membership (some kind of trade-off to get free delivery if you happen to place lots of orders, and you get to watch Amazon movies), in any case I certainly didn't authorize it.
After a call to their customer service centre they eventually cancelled my "membership"
(only after hearing from them what incredible offers I was losing-out on!).
I later realised how this [problem] works (see attached screen shot).
When you place an order for something they automatically store your card details and they don't give you the total cost of the purchase until you select one of 2 options:
1) "Sign up and pay" with the familiar slightly over-sized yellow PAY NOW click box, or
2) "No thanks I don't want unlimited one-day delivery" in the teeniest most unreadable light blue font, almost obscured by the white background.
Select 1) and you have inadvertently signed up for Amazon Prime and authorized them to use your card details! BEWARE!
Always delete your card details after a purchase (unless you want to use Amazon Prime in which case you probably buy loads of stuff from them anyway).
Carlos - The Consumer Avenger