Steering Rack And Pinion problems of the 2006 Audi A4

Power steering fluid is draining from reservoir faster than I can put it in. This is one problem too many on my Audi. The car is a 2006 A4 purchased new in March 2007 therefore 5 years and 3 mths and 60,000 miles. From what I can't read on the web, the oil is lost in the rack and pinion box. This is the fourth time at Audi dealer in past 6 weeks, two electric window regulators, bearing front wheel and now power steering problem that I think will go in the 600$ to 1000$ repair. I've had many cars and since my two past Audi's, I've replaced parts that I had never heard before even if I kept my previous cars 7 years and 160,000 miles. This is definitely my last german product in my yard. Audi has a nice design but that is it. You need at least two cars in the driveway to own an Audi, that way you are not stuck. My dealer has quadrupled his service area, now I know the reason.