Water damage and Insurance claim

I live in a townhouse. I noticed cracks appearing in my bathroom tiles. Apparently two areas of the roof were at fault. It wasn’t until the weather was really bad that what was happening became obvious with water pouring through the exhaust fan in the bathroom. I had to call the SES. Water went down the bathroom walls & damaged part of the kitchen ceiling. Strata had the bathroom spot painted where the paint was peeling on the walls, ceiling & kitchen ceiling. Power points and lights were replaced along with the exhaust fan. The bathroom floor tiles now had about a dozen cracks. The sub floor was inspected and photos showed it was still damp two weeks after the storm. The strata manager will not bother with an insurance claim saying it was a gradual event. My contents insurance company have asked me to obtain something in writing explaining the tiles will not being replaced through insurance. This has not been forthcoming either and my phone calls and emails are not being acknowledged. I read an article that referred to a similar case as mine where the claim was accepted due to it being an unforeseen event due to the leakage of water not being apparent until the damage was too great. Over time with the sub floor being constantly wet and through people walking on the tiles the cracks occurred. Is there anything I can do to obtain help with my problem that occurred earlier in the year? Any comments would be greatly appreciated.