What happened to my mother's monies?

I have been sending Old Mutual Superfund and Old Mutual Claims emails from February,2026 but I am getting no feedback from them, My enquiry is about my late mother's policies that I never claimed (about 4 policies and 2 accounts), It is a 1988 file but I have just received access to know what happened to those policies as I am the only child and never received anything. Old Mutual is giving me a cold shoulder as if they are hiding something. The ONLY email I received from them was saying I should provide them with the policy numbers. I was confused because I have attached documents with policy numbers. Anyway, I manually typed the policy numbers and sent them, from there, Old Mutual kept quiet. I was given this: AR: Deceased unclaimed/ claimed funds - Ref: [SF***] - Old Mutual Enquiry [CLAIMS***4]