Same thing happened to us when we bought a fridge freezer on 0% interest. Actually, we didn't end up paying interest because we didn't use the card until we needed a washing machine, but my point is we didn't ask for a card and wasn't expecting one.
I was on the phone to them today, funnily enough, because we'd missed last month's payment and they charged us £15 - which I got them to take off (at least for the time being).
We also found that the minimum amount each month (on the fridge) was something like £12pm - we used to pay at least £20 - and one month, thinking we were ahead because of it, I didn't pay it - and then got this bloody charge again! They removed it, but it seems it doesn't doesn't matter how far ahead with your payments you are, you still need to pay the "minimum payment" per month.
I dunno, it wasn't obvious to us anyway. But I thought I'd mention it in case it happens to anyone else.
I hope I haven't hijacked your thread, if I have, sorry, just ignore me then!!!
