What can I do about this Homeowners Insurance Problem?

I have freeze damage from last winter. My garage ceiling was leaking and i filed a claim. The adjuster did not look or ask about any other damage I may have. I had an estimate from a roofer and he found ceiling damage in my kitchen. The adjuster says he did not see that when he came and will not include it in my claim.
The fact is he didnt look in that area. I had painted my upstairs and would have noticed it in Feb. when I painted. I also would have had my handyman look at it and found out my roof was damaged near my skylight….What can I do?