Horrible service from the service department

I cannot believe the horrible service I received today from their service department, I took my car in I was there at 7:45, left the car and told the ladies to call Wesbank for authorisation, I have been servicing my car at Tommy Martin eagle canyon for the past 6 services and had no issues at all, they normally call me around 13:00 to update me on when the car will be ready , To my suprise today, I did not get any phone call, at 15:45 l decided to Uber myself to the dealership ,only to find that my car has been parked the whole day and no service was done to it, What makes it worse is that the service advisor lady **** to me when I walked in and said she could see that the car had been serviced and was about to be probably washed, so I sat until I grew impatient and demanded feedback, by that time it was already 17:00, that's an hour of no feedback, only for the lady to tell me that my car will only be serviced and ready by (next day) Saturday or I can wait for a technician to quickly service it, meaning it would be ready by 18:00 l sincerely rejected and asked her why did she not communicate this to me "the whole day" and she said she thought she had it all covered" She told me that there were complications with Wesbank, but again why not communicate with me for a whole 8 hours, Long story short ,l took my car unserviced and I have decided to look for an alternative ISUZU dealership that's not under the supergroup, I will rather take it far. Service and communication is critical for me. I do not want them to resolve this, they already ruined my weekend, I will not be driving to KZN because of their mess up.