I tried to pay by debit card on their site, but there's a drop list for "Title:" which is a required field. And has nothing in it. I've tried on 3 PCs, in both IE and FF. Apparently some people see options, some don't. Link.
So, I saved the page, edited the HTML to include "Admiral", and submitted it, and it worked (Although it put me as "Mr."). Then, on page 3 it asks for a "Card Type", which is another empty box. And when I entered "' DROP * FROM users" there, it said my card number was wrong.
So I gave up and paid by phone. Useless cocks...