I had to make my way through the typical annoying phone tree. Their automated tests claimed a problem with my battery backup. So, when I finally talked to a human, she insisted the problem was that I didn't have power. Except that, of course, not only did I have power, I had not had even a momentary outage. (I can tell because the clock on my oven is very sensitive to power outages and was not flashing.) She insisted that I must have tripped a circuit breaker. I checked the circuit breakers and none were tripped. She then decided the problem was with a battery backup unit and I asked where it was. She said it would be in my basement or garage. Having neither a basement nor a garage (well, I have a spot in the complex garage), this was not exactly a satisfactory answer. She would not believe that I have a condo in a complex that was wired for FIOS before I moved in.
Anyway, I had to leave (with the problem unresolved). When I got home, I asked the condo management office where the battery backup is. They didn't know, but told me two of my neighbors were also having FIOS problems and called Verizon. And when I got back from the evening event I was going to, my service was back.
But I am convinced that Verizon has subcontracted their customer services to a call center on Htrea, the Bizarro world from the Superman comics.