warning lights?

I have a vw golf plus 2007 1.6. I have had the power steering rack replaced three times, two used ones and a new patent part, trying to turn off the power steering warning light and the esc light, without success. Three garages including a vw dealership all said it was the steering rack. I don't know what to do now, even my local garage has given up, any suggestions?

Roy Thorning
January 2017