Insurance claim

In jan this year I was diagnosed with CLL which is a incurable cancer. I submitted my claim with the above company only to be rejected cause according to them my cancer is not at rhe right stage cancer is cancer and there is no cure for this. I lodged a complaint still waiting for response but very disappointed in them. You pay and pay but when it comes to claiming a different story. They bodly tell you you can complain and if you don't like their response go to ombudsman