Terrifying. United Cab Houston sent me a yellow ca...

Terrifying. United Cab Houston sent me a yellow cab. Driver would not turn on meter. When I said he must turn on the meter he said "what's your p.roblem?" And other such bullying. I wanted to exit the cab but was locked in until I paid 6$ for the short, unmetered distance. Customer service put me on hold. Didn't care. Exited the cab, driver would not give me my baggage. Paid, got my baggage, but driver still would not leave until chased away by another guy. Awful. Nightmare.