Dobbs Tire and Auto Centers Maryland Heights - Dorsett and McKelvey Destroyed car while replacing alternator! Maryland Heights Missouri

Had alternator replaced on 2009 Toyota Corolla.  Less than an hour later started smelling something.  Air conditioner wouldn't cool.  Called Dobbs from my cell phone while on the road and Paul (manager?) said nothing that they did could have caused the air conditioner to fail (It was cooling fine before the repair).  He told me they did not have any technicians available to look at the car and that I should have the downtown St Louis location (near where I work) look at it the next day.  After I hung up from Paul the check engine light went on and I immediately pulled over.  Antifreeze was on the ground under the car and when I opened the hood there was white residue all over.  A wrench was sitting in between the hood and engine.  I called Dobbs back and Paul said he would have a tow truck sent out.  He called back later and said I would have to wait, that Dobbs had many locations.  Finally, a male friend of mine called and demanded that they pick me up instead of me waiting for the tow truck.  The manager, Tony, picked me and said they had not connected all of the hoses.  He said they will replace radiator, connect hoses and clean engine.  Hopefully this incompetent service will not ruin my engine.