Hollard Insurance

My late father bought a brand new vehicle in November 2019 and insured it with Hollard. Unfortunately my father passed away on the 11 September 2020, Hollard refuses to settle the vehicle by the bank as they say my father was aware, that he was sick even though we have letters from the Dr stating he didn't know what was wrong with him and he was later diagnosed with stage 4 cancer, sadly 4 days later my father passed away.