No service delivery

My car had a rattling sound underneath when I took it in for 45000km service and I was told to set up another date for them to find the fault. We did that and I took it in again on the 15th July at 07:00am in the morning only for them to call me in the afternoon to tell me they can’t seem to pin point where the noise was coming from. I went back there and I literally had to pinpoint the fault for them and showed the manager,Gert, a video of where the problem was on the car. He asked me to leave the car overnight with them so he can take videos of the faulty part as proof so he can order a new steering rack. I decided to take it home with me and drop it off the following day at 07:00 am sharp. My car stayed there the whole day again just for pictures and videos. I collected it later that day and was told a new steering rack would be ordered and they let me know when they receive one. They then called me again on 1st of August and said I can bring in the car today(07 August) for fitment of the new steering rack and that this would be a one day job. I dropped it off 07:15 sharp this morning and they were quiet till I gave them a call at 16:30pm. I was told they hadn’t attended to my car the whole day and requested that I leave the car with them overnight. I went to fetch my car the same day and the Manager , Gert sat in his office for almost 45minutes while I and another customer waited for him to attend to us. Manager is *********** and has no clue of what’s going on on his floor and I’m still waiting on him to give me a way forward on what to do