1. Not every aspect of SE can receive 24/7 attention, even with shift working and infinite sleep hax.
2. Even if somebody is on top of the situation, it takes time to do anything. There are many relays to consider.
3. Their silence doesn't mean that the community reps aren't here.
4. The reason the JP servers work and the NA/EU servers don't is that there are simply too many people trying to access the NA/EU servers.
5. NA/EU servers are not played strictly by NA/EU players, and the JP are not played strictly by Japanese people.
6. Paying whatever you payed so far does not entitle you to being overly ignorant and malicious. You still agreed to their terms of service.
7. Unless we are there or have recently been there, we have no idea what is going on at SE.
8. SE is a business - their goal is to make money.
Bonus. The English player-base is vastly the most vocal player-base on the forums.
I know you will all take what you want from this.
edit: edited for clarity, and to spell things out for some people.