I hope to hell you didn't pay them................
When you say "both" cam bolts do you mean both on one side? That is not right. To get caster, you want to tip the top of the spindle to the rear. So that means one cam tips the FRONT of the A arm OUTWARDS (which moves the ball to the rear, and the rear cam must tip the arm INWARDS which also moves the ball to the rear
Then, you diddle the two of them to get some form of camber while trying not to lose too much caster