I've never met anybody who sings the praises of O2, the phone network Apple have disappointingly chosen to exclusively offer the iPhone in the UK. Once upon a time I was an O2 customer, but the experience was so bad that not even the iPhone will tempt me back. I was an 'online' customer, which meant suffering their awful, error-riddled website, because no in-store representative could even talk to me about my account, and I refused to call their premium-rate customer support number to talk to an incompetent call centre buffoon. It doesn't fill me with confidence that even after the iPhone launch has been announced, O2 have such disregard for Apple's customers that the left-hand navigation on their website is missing when viewed in Apple's Safari web browser (the browser built-in to the iPhone). If you do get an iPhone in the UK, don't expect to use it to check your bill online*.
Even more annoyingly, when I filled in their contact form to report this issue, I received the following email:
Thanks for getting in touch. We're really excited about the iPhone - for the most up to date information we recommend you visit www.o2.co.uk/iphone or www.apple.com/ukstore If your query doesn't relate to the iPhone, please reply to this email and we'll help you further.
...so, essentially: "Nobody will read your message. If you really want us to read it then try to remember what you typed in our online form, and type it up again in an email." - thanks O2, how helpful of you.
* I've just installed a beta version of Safari 3, and discovered that the problem doesn't happen. Safari 3 will only be on a very few web developer's Macs at the moment, so most of the world still sees the broken site - and it wouldn't even be a hard thing for O2 to fix.