I did a self install with my own modem. It took two calls to find an agent who knew how to properly provision my modem, but both agents were very respectful and I appreciated them doing their best.
Had Frontier at our last apartment and service was always “logging out.” I’d be working and get the magical mystery “you are no longer connected to internet.” Frontier couldn't figure it out. Never fixed it. Happened all the time. Now we have spectrum and haven’t had one interruption or mystery message!