I noticed checking my account status on-line (from their homepage) I can alter the payment method, which I will do. It just buys a bit more time.
I must admit to being naughty in the past when there has been a fashion item flying out before the presenter actually gets round to giving the measurements, (Kathy Taylor was bad for that, sometimes never giving measurement out) and I have put the two nearest sizes on cheque hold to beat the sold out sign and then just bought one. I found it was better to do that than buy just one on Q-cut and then have to tel. customer services and cancel it because it was too big or too small, by which time the appropriate size had sold out. I used to ask customer services, to please get the presenter to give size out first, especially in an outlet show - instead of waffling about when and where you could wear the garment and what it would go with!!
I only had the old desktop pc then which wasn't in the same room as the tv and we were not on broadband at that time. I have a little notebook pc I can use on my lap, but I still find it extremely annoying when presenters don't give out measurements.