Poor poor service and *****

So I bought my car last year december from Vw Kroonstad of which I have received a good service,early january i had a problem with the hooter, i took the car to Vw Bethlehem and they did a job cut and the said they will call me once they receive the stock (the car is still under warranty).In march the car had a problem with the radiator, The Vw Sa came and took the car to Vw Bethlehem and they told that the radiator is leaking and the warranty wont cover for it then i payed an amount of 5500 for the radiator then, i asked about the hooter they told me I will have to pay for that too because the horn was damage due to the radiator problem, I asked them how because those a different cases which happend in different time. Vw Sa only told that i should take the car to another Vw as they are unable to help