Car service

Hyundai Midrand is ****, it’s as if they are using school adults to service us. I took my car Hyundai i20 on the 31st July 2019 and they damaged my crank sensor, my oil statered liking and they receptionist lady in the service side told me that I need to pay R9840 for them to fix it ! I told the manager that I’m not gonna to do that **** but want my car fixed till today they are going back and fourth with my car, I’m even going to fetch it. PLEASE DONT TAKE YOUR CAR TO BE SERVICED AT THAT DEALER I AM KINDLY WARNING YOU! And what annoys me is now they saying the manager says I must only buy the part and tgey’ll Install it for free what rubish is that