I've only ever had trouble with them as well. They are pretty useless through e-mail. You generally get copy-paste stuff from the FAQs that you've already read through 100 times that weren't helpful. They rarely bother to answer the specific problem.
I did have to phone them once. It had to do with my debit card - I can't remember what for certain, but I think it had to do with verifying my account to change my password. It took a good hour on the phone with them, being passed back and forth to different people, for what was actually a very simple question.