I have purchased a c...

I have purchased a car from them last week friday and had to take it back to them this week Monday due to an oil leak, they said it would not be done/completed i have to stay over, there was no assistance in getting accommodation as i dont stay there, no curtsy vehicle provided nothing, now today is thursday i told them yesterday there is still an oil leak and now i have to take the vehicle back to them at my cost, the manager has a extremely bad attitude and says he cant compensate me for the fuel as i got discount on the vehicle (they gave me discount before i even viewed the vehicle) so i said i will bring the vehicle back tomorrow and i would like a refund of my money and he said it does not work like that they cant refund me