lots of people never had as much issue with the old payment systems but since click and buy was implemented i have known not just myself but many other friends having lots of issues with it including extra money taken out of accounts etc...
so i did some reading on them and with their F class rating on the better business bureau and so many horrid reviews from so many users I can not even phathom how a company like SE could even put their name on a product that bad ... yes i know how good ffxi has become but the whole name in general of the company on a product so horrid!!
http://www.reviewcentre.com/reviews239738.html
just one of the many many sights out there where people slam click and buy for various reasons.... you would think se had the time to investigate a company before jumping over to it.