Quick to respond with nothing to show

Quick replies with no results! Long story short... A few years ago a hail storm wrecked my roof, they came and redid the entire thing. Insurer said it was good to go for another 8-10 years without having to do anything. Few years later another storm hits again, and this time they wont fix it, cos they said it was due to negligence. The "negligence" comes in saying that it wasn't waterproofed and that tiles were lifting allowing water to get in. The lifting tiles and water getting in was due to the insurer not doing the job properly in the first place. When they "fixed" the roof, the didnt install it correctly according to product installation specs, they didnt seal it at all, and they even left some of the old damaged roof tiles behind instead of using brand new ones throughout, so yeah obviously there was negligence, except it was from the insurer's side. I handed the case over to the ombudsman and have to beg them for any sort of response, and all i keep getting back is it's being reviewed... Don't know how long it takes to read an email thread, but 6 months sounds like way more than what is needed, unless they're hiring a bunch of illiterates. It's been over a year now since i've started this complaint with no luck from them or the insurer, and more damage is just being done to the house in the interim.