Claim denied

I am so furious Right now after calling Affinity to Amend my funeral policy due to financial difficulties, I was told that my deceased mom was also under this cover off which I honestly wasn’t aware off, now after hearing this I tried enquiring how can I also claim for her because she’s no more and only to be told I can’t claim, it’s been more than 2 months she’s deceased so they can not help me. 🥲