There are hundreds of car services in New York City. Most New Yorkers have one or two they have learned work well for their neighborhood and provide good service and stick with those. Car services are no different than any other consumer service, there are a good ones and bad ones. Also why does it matter if they have a "thick accent"? You are suggesting that the communication is so poor that people regularly need to hang up and call another car service? This is simply hot true. There are times when you might need to call another service because they might be backed up but certainly not due to of a total communication failure.