Or rather... thank you for the suggestion. I'm going to dig into the docs on their web page and see if there's a way to contact support w/o having to log in first.
[edit: After a bit of digging around, as best I can tell, I have to log in with an AppleId before I can post a question in the support forums about how to reset my AppleId.]
The first thing support.apple.com asks me to do (when I want to post a question) is to ask me to log in with my AppleId. My problem is that the AppleId that has always worked in the past no longer seems to work and when I try to create a new one, it says my mobile phone number is invalid.