Deceased Estate wrap up

I am trying to resolve my mother deceased estate. First the bank "freezes" my mother and fathers joint account without notification of any kind, second, we visit the branch to find out that they in fact froze the account around the 21st January. On 27th January I paid a large sum of money into the account to pay my fathers debit orders, etc not knowing the account was frozen of course. To be told that they can still accept money into the account but you can't pay anything out of the account. We provide all the required documents in the branch to the deceased estate. The lady at the branch was very pleasant and helpful. However the Deceased Estates department is pathetic. They don't read documents you have provided, make assumptions and don't follow their own instructions provided in writing. Then today, a confirmation of bank account letter from another bank which has a valid bank stamp on it, valid for 3 months must now be certified!! But if you do a bank confirmation letter from Standard Bank itself on a bank account held with them, they issue the very same letter, in the same format with the very same/similar stamp on it verifying the account!! This is pathetic service. Meantime, the money sits in an account, where you don't have access and they refuse to confirm that credit balances will secure interest at a suitable interest rate. Thank goodness I don't bank with Standard bank. Sadly my husband does. This is pathetic!! I am at the point of engaging a lawyer in this case. They will pay counsel costs if they carry on like this.