Oakwood Mobile Homes Improper install resulting in water dammage in home Tomball Texas

Lots of rain lately, started noticing wet, moldy spots on bath and kitchen ceilings. Called insurance to look at the leaks and was told that 8 years ago, when Oakwood installed the home, they removed nails holding the plastic but did not seal the holes nor did they seal around my skylights or roof jack. The small nail holes took 8 years to show damage on my ceilings and I can only guess at how much mold and wood rot must be in my ceiling. Insurance will not pay my claim and Oakwood is out of business. They have no valid phone numbers and a PO box only. They caused allot of damage to my home and don't have to repair any of it. The location that sold me the home in Tomball is gone. How can something like this even happen? I will have to pay out of my pocket for this damage and Clayton Homes, who bought Oakwood in 2004, claim they have nothing to do with any homes bought before that time. Who can I turn to for help?