Poor service and not sticking to promises

My car went in there for repairsbegining of October and I called Innocent and Nonku on 27/10/15and they said they are working on the car when I arrived there on the 30/10/15 nothing was done on the car. they then started working on the car after that and promised me that I will get it on the 06/11/15 I went there on the 4/11/15 to check on progress there were dents that were not done so they said the insurance never quoted it they then did the quote with insurance and it was approved on the 04/11/15they then call me on the 06/11/15 telling me that they have to take it for coding on the 09/11/15 so I had to cancel all my plans for that weekend as I needed to go home that is far. On Wednesday the 11/11/15 I call to check on the progress the car was still not collected and they said they were gonna collect it that day they said I will get the car on the 13/11/15 at 3pm and I went to town that day hoping that I will get the car as I have given them enough time only that they call me at 2:55pm and tell me that am not getting the car again I have a lot of stuff with me when I spoke to Chris he was rude and defencive and when I ask him what to do and he said I must see what I do