I scheduled my car to be serviced here but they co...

I scheduled my car to be serviced here but they could not find my reservation. I said that I can come back some other day but they said that they can take my car. I told them I need it the next day by 10:00am and was told it will be ready. However, the car was not ready before the promised time and there was no extra work need to be done. The service advisor did not even call me telling me it will be late. I had to wait in the waiting area for an hour and reschedule my entire day because of this.