I used them before...worthless scam artists is all I got.
Sewer line kept backing up at the rental property. They would come out, "fixed" it for several months the first time, then 2 days the next.
Hire some REAL professionals, and found the real reason - I had tree roots, but they were using such a small bit that it was just clearing a small path around the roots to free up the line, that quickly re-clogged. Nice.
These guys did a bore with a REAL auger bit (and auger), did a camera inspection with DVD for LESS than what Roto Rooter charged. Fuck that rip-off company. The guys who actually fixed the problem even asked about the auger Roto Rooter used, and specifically said if I ever hire someone again that doesn't come in with a machine at least the size as theirs, to not let them through the door, as there is no way they could fix the problem correctly.