I moved to a new home with usual home warranty coverage. I also bought optional spa coverage. It turned out that spa will need some repair. So I called the warranty company. The company sent out a guy to do the inspection, and the guy reported back to the company that the parts of spa broken are from not properly winterizing, which per policy is not covered. I read the contract myself: under the section of plumbing, it does say that; but under the section of spa specifically, it does not say it did not cover frozen related issues. My question is, do I have a justifiable cause to insist warranty company to do the repair? Or how can a repair man know for sure the issue was due to frozen. I am new to the house and I know nothing about if the previous owner properly winterized the spa or not.

Thanks!