Service is extremely poor

My vehicle was not repaired fully and Precious promised me it will be sorted out but nothing came through and it is the 4th month now. I was informed by the lady who said she took over from Precious that they actually booked my vehicle on the day that they were not working, she said she will check and come back to me but she never did. This is so unprofessional and I am not surprised because 1st week of December they let me drive all the way to Rivonia just to find out that the parts is not there yet they phoned and said I should bring the car. The service is extremely poor