Pathetic service

So I have been taking my Ford ranger 2.2 too this Ford garage and about 1year ago I kept hearing a noise coming from the front of my bakkie sounding like a squeaking noise ,after taking my car there the first time I was told the problem was fixed 3days later the noise was back so I took the car back again, got it back saying it was the underbelly plate that was rubbing on the frame of the car ,a couple days later the noise was back I took the car back about 4times again after that and now the second last time I was told it was my turbo that was loose, I was so shocked because 3weeks earlier the bakkie was in for its 75000km service so how didn't they pick that up, but anyways when I got the car back again the noise was still there, now I took the bakkie yo a couple other fords all the same story they can't find the noise , so I took it back too this Ford dealer and lost it a little because now they want to charge me for something that they still haven't found or sorted the problem out after almost a year this time I now also get told that it is a small rattle behind the dashboard and they know have to charge me to sort the problem out when my bakkie is still under warranty, this is really shocking service from the garage and now I sit with a noise that no one knows how to sort it out , I mean taking my bakkie there 6 times to get told every time it is sorted out but always a couple days down the line the noise comes bac**** I wouldn't reccomend this garage to anyone the garage manager doesn't know how to ru his garage and the dumbest thing is that he drove with me in the bakkie said so himself he can hear the noise and now all of a sudden you don't hear the same noise that I have been complaining about for almost 1year