Disappointed with brand new car break down on not even 13 000km

Absolutely beyond disappointed with my Hyundai Venue bought 8 months ago with not even 13 000km on the clock, car has a gearbox issue and parts need to be ordered from Korea - was asked to call Hyundai SA and needless to say I am not getting through on the number, nobody answers the call and I get redirected to the switch board - This is unacceptable, I bought a brand new car to avoid issues like this, and now not even 13 000km later I am sitting with issues - I except some feedback as calling your call center is a waist of my time.