Selling reject cars

I have purchased a brand new Hyundai Venue from Hyundai Lenasia I collected the vehicle from the dealership on the 9 July 2022. A few weeks later I got intouch with the branch regarding my brakes that is fading my car was booked in on the 1Aug 2022 *** and I was advised that there is nothing wrong with the car. Monitoring the car same problem every week made contact again car was taken on the 19 Aug 2022 *** once again nothing wrong with the car. Problem persisting made contact again car was taken 31 Aug 2022 no ref number now I am being advised that the ABS pump looses pressure hence the brakes are fading at this moment the car is at the dealership and thus leaving me stranded because now I am getting the run around regarding a courtesy car and also costing me money to get around and being an inconvenience for my family this is really frustrating that I am paying a nice installment on something I have no enjoyment and no one at this point can give me a date as to when I will have my car back this is annoying and currently interfering with my work as well. Chat can be provided of the run around and manager just point blank ignoring me