Datsun Go Mid dub car

I bought a brand new datsun go mid since i have the vehicle i found a lot off defaults on the car i send it back numerous of time and only hear that they need to respray the door and now on monday the vehicle was collected where the driver drive 141km/h with my vehicle and still the vehicle come back with the answer that it was a factory default as new datsun have the same problem i know its not a million car but i bought it new and expect that it is new as that is what i pay for paint defaults seats rails defaults this is ridiculous.