2009 A4 B8 front shock curse

[Nick]

I'm about at the end of rope after 34 years of Audi ownership.  I 
started the simple task of replacing the front shocks on my 2009 A4.  
One of the very first steps is removing a bolt at the top of the 
steering knuckle. The helpful videos show removing the nut and pulling 
the bolt out.  Maybe on a new car, maybe if Audi put a little anti-seize 
on the bolt it would come out but not on my car. I soaked the area with 
penetrate oil and let it sit, then  tried turning the bolt to the point 
I knew it would break, no movement, heated the area as much as I dared, 
no movement. double nutted the end and tapped with a hammer, then with 
air hammer, no movement. So after hours and hours I'm worse off than 
when I started. Both ends of the bolt are broke off, the bolt won't 
budge.  Steel bolt through an aluminum casting can cause problems! If 
only Audi put a little anti-seize on the bolt!