After a week of wondering why I've not received several important phone calls, I learned that some calls are either going straight to voicemail without ringing, or there is a busy signal. Also, I have not received the voicemails that were left. There is no way to get through to Verizon on 611, and the online chat hangs on "I'm sorry, but we're experiencing technical difficulties."
Please let me know how to fix this.