While phone support is indeed handy, I much prefer a ticket support system or even better, the live support online chat option.

The reason is that you can have a record of the events. With a phone call, someone can tell you anything and you have no proof of that if you need it to take your complaint further for example. Phones are excellent for immediacy of response but not for record keeping. You need to safeguard yourself whether you're a customer or a provider unless you want to risk getting into a "You said this...No I didn't!" war of words.

I think the online chat system is the best of both worlds. You have the immediate response of a live operator and some will offer to send you a transcript of the conversation. If you ask at the beginning if that's an option and they say no, there's nothing to stop you taking screenshots as it progresses for your own records.

The other benefit is it costs the same for international customers as domestic. That's what I'd look for first and foremost.