Well, their own general purpose contact form is "reasonably official", and you can always use that in a crunch. You were pointed to that when lensman responded to your first post. That said, I agree that there should be "another way", as many users do not know about this form or don't perceive it as being "official enough".
If you are regretting changing to DreamHost, it's actually a good thing that you figure that out early, as you will be well withing the "97 day guarantee" period.
As with so many things, YMMV - during the time you have had the problems I have a "clear sailing" and have been very happy with DreamHost's service and uptime.
It's always frustrating when something doesn't work. The nice thing about a problem that prevents the panel from operating correctly is that DH is always aware of that situation almost immediately, since they use it themselves in administering accounts. As a result, Panel problems are usually resolved very quickly.