Why is there no option to contact customer service?

So, the three ways come down to two since the phone number has been removed by moderator. The Chatbot does not know any answers and whatever I type, it does not understand and is "still learning". I could get an agent if I have an active account. I don't. I have the Adobe Digital Editions, which was heavily promoted as "free" (as is Adobe Reader for PDF). My authorisation links under Help are all greyed out. I cannot do anything about authorisation and I am hesitant to completely uninstall and reinstall as I have active books in the app. Most of the time, this does not matter, but I wish to have the control back as some problems are only solved through these dialogs. A search online about authorisation shows that Adobe always assumes the software and the authorisation commands are fully functional. On one occasion I could not download a book from a website which I have used successfully in the past and the site reported an authorisation issue. I have been able to view other books, but not that specific book, which is an important document for me at the moment. I realise big companies get swamped, but a chatbot that is "thick as two short planks" (It means "stupid" if you have never heard the phrase before.) It keeps asking me if I want to authorise or erase autorisation, but it can't understand the concept of "it doesn't work!".