Unhappy Customer

Hello Peter I have a problem with Hyndai South Africa.I bought a 2016 1.6 Tucson around April 2016.The sunroof cloth covering became loose after a few months.I took the vehicle to Hyndai service provider.They removed the damaged cloth and replaced it with a temporary one with the promise that they have ordered the original and will call me.I never received any call to date,but I kept on going there and was receiving empty promises.Then on the 20th I went there because the car was showing a diff-lock light on the screen. A lady known as Charmaine Niewenhuizen was in charge on the Hyndai department(South Africa Mpumalanga province,Mbombela)She told me a thorn wire was discovered underneath and there's nothing they can do for me.She said I deliberately drove over the wire and I need to get something like R8 000.00 to have the car fixed or take it to private dealers where I will pay R400.00 only.I tried to reason with her, telling her that the car is still under warranty and it should be fixed.She said her company will not pay and was wasting her time because she wants to leave.She was not even prepared to talk to me.I never felt so embarrassed my whole life.Moreover, she is somebody new in the branch and lacks proper customer service.The car"s millage is 35 527km.I haven't driven it that much,but now I'm afraid to drive it because it also leaks oil on the spot.It breaks my heart because I have to part with almost R11 000 as instalment every month.Now I have to use backdoor mechanics to damage the new car which is still under warranty.How can I possibly drive over wire deliberatey. Please help me,Sir.My names are:Maggie Dimakatso Mokoena, id no ********** 824089, cell: ********** 043, email: ********** Thanking you in advance