Spotty service.
Basic IT support (a.k.a. turn off and turn it on to resolve ALL issues).
They did maintenance and I had slow, spotty service for almost a week. I had to call them 4 times to try to resolve the issue, IT support kept telling me to restart my modem and got no resolution to my issue. I even had a tech support person come in to look at the wiring. Ugh. Even after all that, they had the audacity to ask me if I wanted to sign up for their TV service.