Hyundai poor workmanship and repairs/servicing

I took my Hyundai Accent in for a 90000km service, I reported that there was a problem with the aircon and rear suspension was making a grinding/creaking noise. I recieved my car back and was old that they tightened the bolts on the rear suspension and replaced the pollen filter. 2 Day's later the same problem persisted and I took the car back. Hyundai then \fixed"the Front suspension struts and \""regassed\"" the Aircon as well as informing me that there was a leak on my gearbox that was also fixed. A week later the same problem occurred and I was referred to the workshop manager. The car was again taken to Hyundai and the Workshop manager agreed that there was a problem. The car was taken in for nearly a week and supposedly \""fixed\"" by replacing the aircon pump and fixing an oil leak of some kind in the rear suspension. Now more or less a week later"