3 days to fit a cam belt

I took a Toyota tazz for a major service on Tuesday 3 March 2015, they didn't adjust hand break or road test the car, didn't top up fluids and said all is extras. They completed a 10 point safety checklist saying everything was 100% ok, but before I could even leave the dealership, my car was misfiring. I had also requested they change the cam belt on that Tuesday and they said they would only receive it Wednessay 4th, took my car back in on Wednessay morning for cam belt fitting. At 4pm I called to find out how far they were and I was told the car is almost ready. At 5pm they called me to say that they received the wrong cam belt from the supplier, and I need the car to go to work night shift. They said I would get the car on Thursday. What did they do the entire Wednesday if they only realized the parts were incorrect at 5pm. Integrity does not apply to Ram Suspension it seems. Appalling service, even their driver complained saying the service at Ram suspension is **********.