I've had this line since 1973. Have always used call forwarding in the past. Changed plan several months ago & now when I dial any *number I get a busy signal. I have Freedom essentials on my plan & (think?) I am still using the copper line as no tech has been to my house since I got FIOS 8 years ago.
If you are having an issue with your Verizon service, you can use the Verizon Troubleshooter to fix and report issues with your Verizon Phone, FiOS TV, or Internet Service, as well as to schedule a repair, here is the link: http://www.verizon.com/repair You can find tools on the Verizon Residential Support page that may help you diagnose your issue: http://www22.verizon.com/residentialhelp