In the morning, I had an e-mail response from Sales telling me they had cleared my credit card entry, and the panel was running, so I could try again. Try again, I did, and worked, it did.
Unfortunately, one of the reasons I wanted to get this account now was to try to set up a MySQL database before the end of this week, and tonight, the control panel is not working, so it ain't gonna happen unless the panel comes back up in the next couple of hours, and that means I probably won't have a chance of getting some consulting work to do this weekend.
I was referred here by a friend, and I've seen the other posts here saying this is not typical for DH, so I'm not thinking DH sucks or anything. It's damn bad timing for me, though, and I needed to vent.