I wish there was a zero star option. I've used the cab services in Pittsburgh several times and I can say that every driver I've had was cold and had no personality.
My last encounter (if you can even call it that) was the worst. We were downtown for Pittsburgh Pride and needed a ride back to the Slopes. It was 2 a.m. and busses weren't running so they were our only option. The three of us all waited on hold for about 30 minutes with their hotline till we realized we weren't getting anywhere. We decided to just walk back rather than wait for someone to answer to probably just tell us the wait would be three hours (and that's if they show up!).
This is why Lyft and Uber are taking over and EXACTLY why I will only use these ride-sharing apps from now on. Not only are the cars cleaner, but the drivers are much more personable. Not to mention that they always show up and are at your front door in a matter of minutes.