The car bought in ten days with more problems

I bought the car from IK Mzansi Motors it had high mileage which I never had problem with, the car has oil leaks for which at the dealership it was parked on the grass, it was hard to tell if had oil leaks he said the car was serviced before the car was given to me, I realised that it had oil leaks I asked if he was aware of the problem I called him (Mohamed) he said \I will call as soon as I am done with the client"that was on the 7Th the following day I called him again he did not pick up I send him a message that you promised to call me you never did. On the 11Th while I was driving home after five days of purchasing the car"