Very disappointed by my experience yet customer fo...

Very disappointed by my experience yet customer for 3 years ...
Car registered for the maintenance of 90000 km in May, the 31 to be precise. Total cost of 454 euros and nothing to report except the change of candles to predict ... Car that went very well so far. From this day, I have only problem! I realize that I have a leak in the coolant, verdict 300 euros. Fortunately 1000 euros supported by Volkswagen. Not even 1 month later I have several lights that light up ... Verdict: 560 euros (wheel bearing change / sensor / candles). 2 months after another warning light: airbag defect ... No more airbag, no more steering wheel functions. I do not dare to go back because I do not trust anymore ...
I really do not want to go back ...