My friend needed a ride from Monroeville to Forest Hills (a 9 mile drive) at midnight on a Sunday night / Monday morning. She called Yellow Cab in Pittsburgh. They gave her the runaround on the phone - "can't promise when a cab will come" etc. An hour went by. She called again. More waiting. More phone calls. She was finally picked up 3 hours after her first phone call.
Yellow Cab is dysfunctional.
Note that she could have walked, in that amount of time! I recommend: walk, ride a bicycle, call a friend, take a bus, or hitchhike, but don't call Yellow Cab.