Cause if they had to spend their time answering the millions of questions that already have been answered in the help center, they'd never be able to get anything else done
Why don't they respond on the many complaints on their forums?
The forums are not handled by Adsesense staff. It's a peer help forum.
Cant we start a site telling people about Google's poor communication canals
You can start whatever type of site you want.
Account Not Active An AdSense account does not exist for this login, as it is associated with an unapproved application. For more information about your application, please review the message we sent to the email address you provided with your application.
That means you applied and were disapproved at some time in the past.
Re-apply with a new application, new email address and new website. If you've already done that, you'll need to post a copy of the email they sent you in response to your new application.