Few months back Sanlam paid Death cover of my late father,i opened estate bank account with FNB and they paid half of death cover money in that estate bank account and I've been using that account for months now

Few months back Sanlam paid Death cover of my late father,i opened estate bank account with FNB and they paid half of death cover money in that estate bank account and I've been using that account for months now.last week they blocked the account denying me to make transfers when i call them they said it's because they never called master of the high court to confirm,my question to them why did you transfer the money in the first place and I've been using that account they failed to gave straight answer but they said they will fix the problem and it will take 1-3 working days that was last week Thursday but up until now they blocked the account