I bought warranty booster in 2019

I bought warranty booster in 2019. I called them for my car to be diagnosed inorder for any wear and tear. I took it to Hyundai springs. The battery was faulty, from discs needed to be fixed and wipers to be replaced. On my policy it says wear and tear covered 💯 percent. Only the battery was replaced and me paying more than fifty percent on the battery amount. The refused to pay for discs