Hire a lawyer, sue for damages, loss of income, fraud, legal fees, etc.
At least get some legal advice. Sounds like a heck of a case.
'02 CAMARO SS SOM; 5.7L LS1/FLS6B
'08 TBSS AWD Black Granite Metallic
'15 Malibu LTZ 2LZ Turbo
'14 CAMARO ZL1 Blue Ray Metallic