Worst service at Renault

I am very disappointed with the Renault South Africa it's the worst!I bought my Renault kwid in March 2018 got an accident in June 7th so I got a courtesy car from the insurance while my car is being fixed now they want a MASIVE amount of excess money of R14500 from the insurance Rodel,now my car is not ready because the got the parts late from renault and still waiting on another part that has to complete my car of which is more than 4 weeks now and my courtesy car days are finished now they inconveniecing me now I have to pay extra money for another car on top of the R14500 excess money i have to pay because I have to take the car back from the car hire now when I call Renault they tell me there's nothing they can do yet my car is Renault I feel like I can change my car now they don't even want to assist. Quite disappointing