(Bloomberg) -- The Cajee brothers, who ran a cryptocurrency investment platform from South Africa that the local regulator suspects of being a Ponzi scheme, are confounding both their family and desperate investors alike. It’s still hard to establish the whereabouts of Ameer and Raees Cajee, the pair that operated Johannesburg-based Africrypt since 2019. They appear to have vanished, along with an estimated $3.6 billion in Bitcoin -- an amount that a lawyer for the brothers said was inflated.