Poor customer care

I have been with dotsure warranty since January 2023. This month my car had a coolant leak and as a result started overheating. I sent the car to be checked out . It was found that the leak was from the oil cooler. I started the claim process and sent the quotation. My claim was declined because they said the part was not covered. But when i look at my policy schedule under the overheating section there is no specific part mentioned. With that I assume any part which causes the car overheat is covered. I looked at the policy wording and i cant find a section that says under overheating only these certain parts are covered. I just have had a very horrible experience and the person handling my claim was very unfriendly and i left very uncertified with the answer and the reasons for my claim being rejected.