Earlier quoted context omitted.
There is a very easy way to get support: https://support.google.com/adwords/ Theres a link to contact directly on this page.
Thanks for the link, but their response was to "check the product forums". I understand that they don't want to field calls from millions of site owners asking why they aren't ranked higher, but we spend probably $25k/month on Adwords. It'd be nice if they could give us a pointer to an actual person who could help us figure out what went wrong.
Also, you can always try the community