Oh fudge, sorry to hear this Contento. First thing I would do: wait to see if Keystone replies today and take their advise. If you don't hear from them, I personally would take the rig to a competent RV electrician to have them start testing the components. My RV is very complex, with 110/50 amp service, a generator and 12 volt batteries. 3 separate electrical systems that are wired inside the rig. I am sorry I couldn't give you specific answers but it is a complex system and no need to further the damage. I will follow your thread and hope for a simple fix.
If you hired a reputable licensed business they would have general liability insurance and hopefully would cover the damage. Best of luck.
