a promise they make is a promise they brake

i had arranged for car hire and they said they will drop the car of at my place of work because i walk to work because my car is at autobodyshop.first they said that my car will be at my work at 4 o clock and then at 16:00 they said they dont drive into industrial area.then i suggested parktown and they said they wil meet me there.16:45 the drivers whent home without giving me a rental car.then they phoned and said that they will organised a driver and i will get a driver at 18:00.18:30 they told me that they first have to go and get the car at office and then they will meet me after 19:00.still waiting more than half a day for no service