Need your opinion on the following issue.
Was in a fender-bender end of December 2014, ended up rear-ending a truck in front of me due to some third guy running a red light, causing some front damage to grill hood, head-lights etc.
My 2010 Audi had to be taken in and I went with a small body-shop my German mechanic recommended.
They replaced the front parts of my Audi, headlight assembly's by aftermarket housings, due to insurance and age of car. Which do look like OEM's, but keeping the bulbs and ballasts. Since then my HID's which I loved so much are no longer working as they used to and night time driving has become a problem.

The light beams are no longer in an unnoticeable beam, illuminating much of the road in front of me but a stepped line, with left lower, a hard horizontal cut off. When switching to high beams the stepped cut off disappears though.
They still were either pointing up, blinding others or to close in the ground.
After several times going back to the body shop an readjusting them myself, I have now identified that the auto-leveling when I start the car changes the headlight setting as if they are not affixed properly in the housing.
Each time the auto leveling happens the left and right beam are in slightly different positions.
What in your opinion is the problem, what should I do? As the body shop doesn't seem really to know what is wrong and I keep going there constantly.

Thanks in advance.
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