I have FiOS for TV/Internet (no phone). My service is currently out, and Verizon Support has assigned me a ticket number. Supposedly I can go to verizon.com/managerepair to manage my ticket, but the first thing I have to do there is enter my Verizon phone number, which I don't have. My actual phone number doesn't work, and there is no place to enter the ticket number, which is the obvious thing that should be the solution.
This has been a problem for years. Any time I want to contact Verizon, they ask for a Verizon phone number. Getting support when you don't have a Verizon number is an enormous pain. It would be trivial to fix this, if Verizon actually cared about providing support for their customers.