Hyundai polokwane.... Very bad bad bad service

Worst service ever, i took my car to be checked as the camera signal was lost and hard reverse gear but what i got there is totally insane now the car has differen warnings popping out n i have been told it was sorted of which it was still not showing... Why are they taking the cars in not servicing them as we do pay them n now i have to take it back n for weeks as they mentioned now... I will be carless.....