Hyundai Brynston - Bad Service

Hyundai Brynston did a terrible service for my 75 000km - I since had problems that should have been picked up at service. I always service my car on time and because I am woman I do not want to have funny things in my car that might be dangerous for me should the car break down in the middle of nowhere all on my own and that is why I thought servicing at Hyundai would be a good thing for me which is now clearly not I should have went somewhere. Lots of things came out and I wonder why my car was there the whole day and I keep on incurring additional expenses because of things that could have been avoided if someone did a proper job