Keeping eye on insurers Those unhappy with how their insurer handled their claim should not despair as there are avenues for recourse. The office of the Ombudsman for Short-Term Insurance (OSTI) is a reputable body that investigates and settles disputes between customers and the company they have insurance with. .. This article is free to read if you register or sign in. If you have already registered or subscribed, please sign in to continue.