Hyundai PMB no accountability

I am so saddened & frustrated i have had with Hyndai Pmb being assisted by Delane. On the 19th day of November i took my car there for a 15 K service on the 21st November i was hit by a steel rod while driving okay did a 1000 more Kms after that (2/3 weeks later) then my car showed an engine light and stopped. The car was towed to Hyundai then Delane called to ask what happened with the car and who paid the tow truck “maybe it a clutch”, 2 days later she called and asked if the car had been in accident she just asking to file. I thought back to the steel rod accident and narrated she then said that the causw of the engine light coming on😳. Then calls later to say they have checked the car sensor/certain wiring ans ox box ( hope im spelling it right) need to be fixed and it will cost R8820. I didnt give a go ahead at that time then later called and ask again what was wrong with the car and amount she said the same thing and i decided to take my stokvel savings and pay for it as it was close to the excess amount i would have to pay via insurance. The following day she called to say there is something else that is broken on the car which will cost an extra R7000 she suggests I contact my insurance. Im like how come cause the car was assessed by you guys then you gave a quote to fix it. Now there is changed she saId she told me. I don’t have that money and they take 0 accountability noting they had also serviced the car 2-3 weeks back. She now speaks of parts being ordered from overseas and 21 days turn around time. I am so disappointed and. Frustrated over this issue. It has totally ruined my family plans this holiday season. Is it fair that they would give me a quote then change it a day later for they’re miss diagnosis? I feel used and ****med😢