I hate Old mutual i have even stop paying my policy

Old mutual is soooo unfair my husband has been paying for Life and disability from 2011 then early this year his one eye became blind because of sickness so he tried claiming his policy they decline the application they said they can't approve his application because it only blind in one that crazy!! one eye means you not disable?

if atleat they giving him certain percentage because he is paying a lot for this policy