Bad Service

I bought a car 2011 Auris 1.3 x through Mccarthy Centurion.i signed the contract and collected my car on the 3rd of November,while we were driving back home there was a funny noise on the car,then the following day it was returned to the dealership for repairs.a courtesy car was given,the following day they called to say we must return the car as it was sold,we returned it.they gave us another one.the following day we got a call from the branch in Gezina,they said there was a miscommunication between them and the centuriom branch,that car is also sold we must take it to Gezina.then we didnt take it to Gezina because we realised that we were being too ,soft on them thats why they keep on playing games and its also time consuming.on the 8th i bumped the courtesy car and they said i must fix it they quoted me R 3000,so we decided to look for another quote.when they have to give me feedback i must always initiate.I spoke to the manager Jan-Hendrick on e-mail and he said they have a process to follow but he doesnt specify how long does the process take.its almost a month now and it seems nothing is done.i need your assistance.