Slab-on-ground foundations are repaired by lifting low areas
They are not repaired by forcing high areas down. In the perspective, foundation repair means making the slab surface more level. Most homeowners are mostly concerned about drywall cracks, brick veneer cracks, and door issues. They are doubly concerned if after making repairs to the house the same problems return. How level the foundation is is a minor issue unless it is noticeable. Most people have a hard time perceiving a floor slope of less than 1%.
Lifting a slab-on-ground foundation has to be coordinated
The more you lift the more risk you take
Why a stiffer foundation is a better foundation despite being less level