Poor Service

I took my car in on 18 Feb 2016l. I was later informed that the spud plugs need to be replaced and I authorised them to proceed with replacing. Later on when I went to pick the car, the car was not drivable, so I was told that the compression was tested and it was 2ps instead of the normal 6ps. As a result they suspect tht the valves are bent,thus the head in the engine needs removed so that the valves are replaced.19 Feb I was told that the warranty claim to Renault SA was not approved as Hatfield is not authorised for big jobs.They thus need to send it to a bigger dealership (Menlyn).They said theyl move my car to Menlyn on Friday/ Sat. On Monday when I called,it was still not taken to Menlyn.I thus arranged for towing at my own cost. When my car got there yesterday at Menlyn they said they had no information on my car, they dont know what to do with the car as they no communication was received from Hatfield. I have already incurred so many expenses such as towing, and had to hire a car last week and my car is still not fixed.I askd for a loan car, unfortunately I could not be assisted with that too.I don't know when I will be helped Menlyn said I might have to wait, q is long