Well the contractor who gave that False information with out any Certifications should be hung out to dry.. Your not in a position to give any professional advice to any structural faults that is left to a PE.. I swear some of the Contractors that worry about a cracks in concrete should go to the ACI and learn what concrete does in its life time... IT CRACKS.... Its the nature of the beast.. If a contractor came behind me and did something like that i would have his License. In fact the contractor doesn't even have a PE or ICC Reinforced Concrete...