Renault Brits Disapponted me

My Husband and i bought a Renault triber IN August 2022. It has since giving us problems when starting it. we took it to Renault Brits. They told us that the problem is due to to the incorrect installation of tracker, yet the problem started way before the tracker was installed. We went there and explained that the problem started before the tracker was installed, they said the is nothing they can do. We have to call the tracker company to uninstall the tracker . i got mad and demanded atleast a courtesy because we paying something that we dont even use. the manager shouted with me asking if i expect him to pay for my car or if i expect him to give me his personal car . i was so so hurt with the manager`s treatment . i have never seen such a bad service anywhere. i got out of that place with tears. the tracker company went and took out the tracker. Now the problem is no longer with the installation of the tracker. They say there is a part that the must order overseas and it will take about 4 to 5 weeks to arrive in SA. They still do not have courtery car. We are paying for a car we do not use. We called Renault SA for many times no one is answering our calls. We feel so helpless as we do not not know where to ask for help. If only i knew this was going to happen i wouldnt have bought a renault car.