Review Bad service

I bought a car last year 18 November 2020 from Kia Weltevredpark it gave problems from the day I bought it with sound system. I noticed the was a oil leakage but wasn’t aware it was the it (Hyundai IX35) I thought it was my other car only to find out it was the Hyundai IX35 I bought from Weltevredpark, I noticed when I took my car for first car service at Hyundai The Glen they noticed oil leakage, cooling system pressure test failed I then reported the matter with the dealership they said they won’t help reason been the car is to old and I was suppose to expect oil leakage and problems. I reported the matter last month didn’t get any help from the sales manager Dawie Styne he just told me the car is to old I must expect such things. I am currently financing the car with the dealership and I feel I have been treated unfairly by the manager who said I was suppose to expect such since is a pre-owned car and is also old I need resolution towards the problem