Bad experience

I bought the car at We buy cars Silverlakes on the 25 February 2021 and upon buying it was due for a 120 000km and I took it for a service on the 26 February 2021, they then alerted me that the vehicle is overheating, because I thought its a small thing I then gave them a go ahead to fix which amounted to R16368.15 and after doing all that I collected it and upon driving I realized it was leaking and I took it back and they installed new water pipes which amounted to R1948.20 which I also paid and they told me that the engine needed to be fixed, I then contacted we buy cars because I felt it had too many problems and upon buying buying it had a perfectly fine Dekra report, but then We buy cars said no they cant help me.